Vermiculite board. Gas Fireplace Parts. Vermiculite board

 
 Gas Fireplace PartsVermiculite board Vermiculite is a hydrated magnesium aluminum sheet silicate mineral closely related to mica and has all of the thermal and chemical resistance mica is known for

Packing: in 1MT bag. Jonáš Tokarský). Raw gold vermiculite ore is bulkily supplied at direct factory price! Golden exfoliated vermiculite is classified into a wide variety of sizes, which includes 20-40mesh, 40-60mesh, 60-80mesh, 80-120mesh, 1-3mm, 2-4mm, 3-6mm, 4. Vermiculite board is a new type of inorganic material, which uses expanded vermiculite as the main raw material, is mixed with a certain proportion of inorganic binder, and is processed through a series of processes. We also have larger sheets of vermiculite that can be cut to size. go to shop read more. Because vermiculite is sterile, the threat of damping-off is virtually eliminated. Fits most stove brands. It has high temperature resistance, fire protection, green environmental protection, heat insulation, sound insulation, Plates. Vermiculite is a naturally occurring non-toxic. Palmetto Vermiculite provides exfoliated vermiculite to the construction, horticultural and. It contains no asbestos, which ensure it is not harmful to install. Low price and best quality. Thanks everyone for the input, especially dvellone and LoschCoalStoker. Every care is taken in mining operations to minimize the impact on the environment and to restore land to its natural condition when mining ends. It is a silver-gold to gray-brown mineral that is flat and shiny in its natural state. 7% higher than the base cement) and a tensile strength of 11. Vermiculite is one of the world’s most versatile minerals. Vermiculite insulation systems have the great advantage of being able to withstand repeated heating and cooling and they can be formpressed just like wood, which offers a world of design possibilities. I'm not sure why it is indicated that only fibre paper separators will work at fusing temperatures. ASTM C208, Type II, Grade 1 and Grade 2; Federal Specification LLL-I-535 Superseded. This OMRI-listed material is great for organic gardenging. Vermiculite is a natural silicate mineral that is a type of volcanic rock with excellent insulation, heat resistance, and lightweight properties. Another study found that, among houses with vermiculite attic insulation, only 26% had detectable levels of amphibole asbestos in their living spaces. This board is stronger than most fiberboard and can be cut and tooled just like wood. If you need help with your purchase please contact us durectly and one of our team. (SKAMOL V-1100). The Heat Proof boards have excellent thermal insulation properties and ideal for making firebricks for: solid fuel stoves and fires, lining of fireplace openings, making your own fire bricks for barbeques. Vermiculite is ideal for seed starting and plant propagation. 25mm thick. Included Warranty & Technical Support Moisture: Max. For the whole job, when using vermiculite for the insulation that is, I buy 7x 100 Liters bags (larger bulky but lightweight paper or plastic bags. , Wheeler, R. 99 to £86. The fireboard can be worked easily with wood working. The use of vermiculite plates is aimed at improving the thermal insulation for both personal and industrial purposes. It only yielded about 10 pieces of fruit and upon inspection, the mycelium. Send E-mail. This 12˝ (30. 500mm x. ) 700L makes it 25 cubic feet (or exact measure convert is 24. It can also be found in insulating board, ceiling tiles and thermal insulation products. We have been in the stove industry for 13+ years and carefully select each product. Vermiculite has a high cation-exchange capacity. Gardenscape. Dimensions : height is 25mm,. Easy to cut. • 240 volt power. com: Vermiculite Board 1-48 of 119 results for "vermiculite board" Results Price and other details may vary based on product size and color. Vermiculite by MushroomMediaOnline - 8QT - Fine Grade 2 - Natural Soil Additive, (647095945962) AddRe: Cutting Vermuculite Board. Add To Cart. There are several benefits to using vermiculite, including: High water retention: Vermiculite can absorb up to four times its volume in water, making it an excellent choice for moisture retention in soil and potting mixes. Figure 1. Sign In Register. Premium golden color expanded vermiculite for horticulture soil amendment, construction insulation, and animal feed. We Offer A Price Match Promise – Our vermiculite fireboards provide fire resistance, insulation and thermal stability. Description of our products. PLAIN & SMOOTH fire resistant Vermiculite Sheets, tested to 1100 degrees Centigrade. Due to the way it exfoliates when heated, its name comes from the Latin vermiculare, meaning to create worms. 6 g/cm3 and a refractoriness of 1500–1600°C was produced from expanded vermiculite, and a technology for producing ceramic vermiculite. VITCAS Pompeii-100 Wood Fired Pizza Oven. 00. So far 2 options. Print view; Search Advanced search. Re: CalSil vs Vermiculite Board vs Ceramic Board. VITCAS-HT-BOARD. Application. 4 cu. Plain Vermiculite Fibreboard Thermal insulation Panels Sizes Available: - 15mm, 20mm, 25mm and 30mm boards. SilveRboard. Measurements show that the thermal con ductivity of the loose vermiculite particles is in the range of 0. Vermiculite-asbestos insulation resembles rocky gravel. Sterile, odorless will not mold and. Vermiculite For Brake Linings and Pads. James Hardie. When lining the complete inside of a recess the board I always used is 12mm Hardiebacker cement board about £12 a sheet 1. We are the stalwarts in the domain of manufacturing, supplying, wholesaling, and exporting Vermiculite. The most important tool in the wood burning process and the largest variable is the one that is running the stove. of metallurgy, construction, petrol, chemical, machinery, power, light industries. It is very easy to cut into any shape needed. Pool Krete is a porous but rigid liner base, which offers numerous benefits to both the pool installer and the pool owner. This is the main board for discussing general techniques, tools, and processes for fusing, slumping, and related kiln-forming activities. Vermiculite Boards Vermiculite board is a refractory material made from exfoliated vermiculite and special inorganic binder that provides a high degree of heat resistance to temperatures up to 1100 degrees C and heat shocks. Fiber Paper 1/32in Thick 24 x 24in Sheet. 7 (34) Report Details. The BV board shows almost no mass loss in this region. The Fire Boards have excellent thermal insulation properties and ideal for making Vermiculite Firebricks for solid fuel stoves, lining of fireplace openings, cut your own fire bricks for barbeques, pizza ovens & stoves. Improving water retention: Adding vermiculite also improves the soil texture of sandy soil that drains too. Our ceramic fiber insulation board eliminates the need for vermiculite. Ironically, in both studies, some of. Although extremely durable to fire and heat, Vermiculite board has a soft texture meaning that it can easily cut to shape using a hand saw. Easy to cut and shape. It is often used for lining the interior wall of the firebox, and for fireproofing the area around the fireplace. Moderators: Tony Smith, Brad Walker. It has a wide range of uses in construction, horticulture and gardening products, industrial applications and motor vehicles. Kingspan Insulation R-10, 2-in x 4-ft x 8-ft Unfaced Foam Board Insulation. Vermiculite Board is non combustible. SECTION 4 - FIRST AID MEASURES. The Heat Proof boards have excellent thermal insulation properties and ideal for making firebricks for: solid fuel stoves and fires, lining of fireplace openings, making your own fire bricks for barbeques. , Ltd, located in Shijiazhuang city, Hebei province, P. Additionally, the material is used as a cover for seed topping. 98. This expansion process is called exfoliation and the resulting material is used in bulk form or processed to boards by a press forming process. One recommendation though is to turn the board every 25 or so firings to avoid warping. Vermiculite board has. Primarily for the joints between boards. Developed in 1824 in Millbury, Massachusetts, USA, it was the first of its kind in the world at the time. It has high temperature resistance, fire protection, green environmental protection, heat insulation, sound insulation, Plates. Vermiculite (Magnesium, Aluminum Iron Silicate) >98 1318-00-9 Not Available Not Available 10 1 Silica <1 14808-60-7 Not Available Not Available Not Available . VERMICULUX ® -S has permanent dimensional stability, so in the event of a fire it reduces the speed at which the steelwork will heat up, allowing it to maintain its loadbearing capacity for longer. Key Products: Vermiculite Fire Brick, Vermiculite Insulation Board, Bath Mat, Wall Tiles, Ceiling Tiles. Sold in multi-litre bags, this insulation can be installed by both builders and homeowners and is. go to shop read more. Crocidolite (blue asbestos) was commonly used to insulate steam engines. I think (this is just a guess) that the binder is waterglass: there's nothing concrete like about the stuff. Regular price $25. Heat Proofing. jamie of campbell likes this. Vermiculite Board. . Anything that would cut wood will cut vermiculite board. Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Vitcas Vermiculite Fireboard 1000mm x 600mm x 25mm. /113 l Horticultural Vermiculite. Get it tomorrow, 22 Sept. They have good thermal properties, are highly thermalHorticultural Organic Vermiculite - (MADE IN UKRAINE ) - Medium Grade - Natural Soil Additive for Potted Plants, Orchids, Hydroponics, Terrariums (3 QUART) 2 5 out of 5 Stars. This is the main board for discussing general techniques, tools, and processes for fusing, slumping, and related kiln-forming activities. Vermiculite is a mica-like mineral with a shiny flakes which is one member of the phyllosilicate group. Our V-Board range is the perfect Vermiculite based product for a wide range of fireproofing and insulation applications. Remove any contaminated clothingBest Prices for Vermiculite Board 25mm Across the US Online Stores Scanned Every Day! Easy to Use | Free | Trustworthy Recommendations | Find your deal now!. Chambers. Features of Vermiculite board for Stove fire bricks: A good idea which increases efficiency of your Wood burning Stove is to replace the grate or cover it with a piece of vermiculite board and allow a good layer of ash to form on the base of the stove. 3. . You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!Vermiculite. Share +. This vermiculite board is used to line the inner walls of a stove's firebox. Vermiculite is a naturally-occurring mineral composed of shiny flakes, resembling mica. Size: 193mm x 303mm. Model # SB12AKIT. Replacement Vermiculite Brick Panel for US Stove American Harvest Stoves - 891705. The results of this investigation indicate that the potential exposure. Genuine OEM US Stove Company (USSC) Vermiculite Baffle Refractory Board With Herringbone Pattern. Use vermiculite in gardens and with potted plants. Quartz Lumps. Vermiculite board has a low hardness, so it discectsages fogging and dampant insects. The recent innovation should provide a time-saving technique for commercial and home inspectors. Answered 2nd Apr 2023. This page provides important information on how to protect yourself and your family if you suspect that you might have vermiculite. The color of vermiculite is a golden brown to a dark brown, and it is sometimes difficult to tell from the potting soil it’s mixed with. SkamoEnclosure Vermiculite Board Safety Data Sheet 7. E. Vermiculite Fireboard is soft and can be easliy cut with a hand saw to create smaller Fire Bricks. Stove Firebox Lining High Quality Vermiculite. It could also fill gouges in a kiln shelf. Heat resistant adhesive for use with high temperature insulation boards, vermiculite boards, high temperature plasterboards and construction boards. Check offer!Because of its low density and good insulation properties exfoliated vermiculite is used in building boards. These decorative boards can be used around fireplaces and stoves as. Vermiculite-asbestos insulation resembles rocky gravel. Bag Capacity/Dry Volume (cu. Sedexlab will send a technician on site to perform the visual inspection and to meticulously and safely sample the vermiculite insulation in the attic. Vermiculite board is an insulating board from a naturally occurring aluminium-magnesium silicate mineral. Choose an option 1 Superfine 0-1mm 2 Fine 1-2mm 3. Vermiculite based fire protection being spray applied to structural steel Because of its low density and good insulation properties exfoliated vermiculite is used in building boards. It’s also heavy and smells kinda icky when you cut it (just so you know ahead of time). The cement board is smooth (one side smooth, one side slightly textured) and can be painted with bog-standard emulsion. Packing: in 1MT bag. However, vermiculite undergoes significant expansion when subject to elevated temperatures, the raw material exfoliates, leaving a. The C-Cast baffle is made of an aluminosilicate fiber material that is compressed with a binder to form a rigid board. com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment. Viagrow vermiculite can be mixed with Peat moss, mushroom compost, cactus soil, organic soil,. The 4 cubic feet size is more manageable in this case than with vermiculite. The material can be used to fix boards to brickwork, blockwork etc. 30 minutes before initial use. 2. , ltd. 01 barns/electron U=PE Vermiculite x rElectron Density= 10. 8 Quarts Horticultural Vermiculite. Insulation rolls and batts are great for insulating your walls, floors, attics, and ceilings. Both sell for about $3. ComfortBilt Pellet Stove (4 PC) Replacement Vermiculite Refractory Panel Kit for the HP22. Our vermiculite is certified asbestos free. It can be used in various ways, either used alone, mixed with soil, or combined with bark for a soilless potting mixture. Vermiculite is used as a soil amendment for moisture retention, aeration, and as a carrier for fertilizers. Item Name-Price. Boards containing exfoliated vermiculite are often used as a “core” in firedoors, to build fire barriers and to encase or construct fire resistant duct work, and. So you could use a jig saw or any similar tool. You've explained why there's only vermiculite. 31 cu ft. 99. Step 7: Self Care. 3. R-values are additive. Vermiculite (or perlite) concrete isn. Seek medical attention if irritation develops. panel of 1˝ (2. 25mm thick PLAIN & SMOOTH on both sides and fire resistant, tested to temperatures of over 1000 degrees Centigrade. It’s applications include in fireplaces, stoves, heaters, boilers, vessels, tanks, or wood-fired ovens. Wisconsin for $8 a bag (4 cf), as opposed to $50-$65 a bag for a vermiculite mix sold by chimney stores online. Focal Point Laminate Back Panel Granite / Stone 930mm x 930mm (937PJ) (1) compare. #21. Encouraging and promoting best practices. Expansion. . enordy. Fits Pellet Stoves 6041, APC1406, and More. Origin: China (Mainland) Location: Hebei, China (Mainland) Hebei Color Season Metals And Minerals Import And Export Co. Regardless, whenever generating. Can I place the vermiculite board on top of the kiln shelves, so that I will have a flat surface (without seams) to fire my piece on? And do I need to pre-fire the vermiculite board? Bought the board at Seattle Pottery. Plastic Construction. Ceramic boards are Alumina-Silica insulating boards and blankets are the most efficient material available for. Unit price / per . While it does help retain some water, it's primarily. The 1100 C is a light weight board which has been developed for general insulation applications with a density of 350-450 kg/m3. This THERMOROCK 2. Dedicated to safety, integrity and honesty. This is an extremely innovative product for. I found a source for perlite here in S. 31 cu ft. I didnt tighten them very tight as I then used the high temp glue used for door gaskets. Vermiculite is an aluminium-magnesium layer silicate, which bloats to ultralightweight granulates through heating and is processed to boards, bricks and shaped parts through a compression mould procedure. 100+ bought in past month. All p. Vermiculite is mined using open cast mining techniques where the ore is separated from other minerals and then screened or classified into several basic particle sizes. There are several advantages to this process: • Less waste than traditional kilncasting processes • The majority of the molds will be reusable • Molds will be of uniform thickness, allowing for uniform heating and cooling • Molds will not fail at casting temperature (one of theVitcas Board Adhesive - a specially formulated, heat resistant adhesive ideal for securing and sealing joints across a wide range of boards. vermiculite board. Starting seeds. 9 p. Global Vermiculite Market by Type (Powder Products, Flakes Products, Boards Products), By Application (Building Field, Industrial Field) And By Region (North America, Latin America, Europe, Asia Pacific and Middle East & Africa), Forecast From 2022 To 2030. 🔥NO 1 UK Manufacturer Distributor Best Price Service🔥. FREE delivery Sun, 15 Oct on your first eligible order to UK or Ireland. The Best Potting Soils For Indoor Plant Enthusiasts What is Vermiculite? Vermiculite is a mica-like mineral that serves as a soil amendment. Description. . Vermiculite boards are available in 1100 C and 1200 C grades. It is a limited-expansion clay with a medium shrink–swell capacity. 1 Process Description1-9 Vermiculite is the geological name given to a group of hydrated laminar minerals that are aluminum-iron-magnesium silicates and that resemble mica in appearance. I'm not sure why it is indicated that only fibre paper separators will work at fusing temperatures. 5 x 61 x 91. VERMICULITE Overview In response to reports it received about adverse human health impacts associ-ated with exposure to asbestos-contaminated vermiculite, the Environmental Protec-tion Agency (EPA) conducted a series of tests to evaluate the extent and nature of the risk. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy. It is completely safe, non-carcinogenic and easy to handle. Vermiculite is a naturally occurring mineral formed into a pressed piece of board and then cut into shapes. I found a source for perlite here in S. Sounds like you're talking about some kind of pressed board product. 5%. In a different study, 29% of homes with vermiculite had very low levels of detectable Libby amphibole, similar to normal outdoor background concentrations. Vermiculite Boards Vermiculite board is a refractory material made from exfoliated vermiculite and special inorganic binder that provides a high degree of heat resistance to temperatures up to 1100 degrees C and heat shocks. The use of vermiculite plates is aimed at improving the thermal insulation for both personal and industrial purposes. These boards are often used as a ‘core’ in firedoors, to build fire. 159. It has excellent thermal insulation properties and minimal shrinkage at high. Displaying 1 to 3 (of 3 products) 1; Product Image. The ones you can buy still require a base to be made or bought and you have to assemble the oven as well. High density premium vermiculite board for use in woodburning multifuel stoves pizza ovens. Improving drainage: Vermiculite is added to improve the soil texture of heavy clay soil that is waterlogged because of poor drainage. It isn’t waterproof, but absorbs moisture well and is a great support for tiles. Model #: 891705. 3. If you get confused, just remember that perlite is. Features: Fire ResistantClear All. Worryingly, other commonly building materials have been found to contain asbestos. ft. Unless a plant needs dry soil, you can assume that most plants will benefit from vermiculite. Add to Cart. Moderators: Tony Smith, Brad Walker. 193mm x 303mm 240mm x 303mm 249mm x 303mm 240mm x 610mm 250mm x 610mm 500mm x 610mm 1000mm x 610mm (2 x 500mm boards) Thickness: 25mm. Good idea if I can find a source of board at a decent price. FAQs. FIREPROOF VERMICULITE BOARD are boards that can be produced in various size and densities. It is odorless, sterile, disease-free, insect-free, and seed-free, making it a great alternative to vermiculite. 5 MPa (65% higher than the base cement). High density ceramic fireplace boards with a brick pattern for heat accumulation and storage. 25 – 1. Photograph below shows coarse grade exfoliated vermiculite Scale bar = 8mmFIREPROOF VERMICULITE BOARD are boards that can be produced in various size and densities. Vermiculite in its pure form is nontoxic. Location: attics, poured in to cavities of block cores or. microscopy of a vertical section of vermiculite board. Cement Backerboard 750 Sheets. . Scope. As the sole growing medium in a hydroponic setting, perlite is more suitable, although a mixture of the two is ideal. Post Reply. 5 lists the properties of vermiculite and some of the common smectite minerals found in nature. This product is similar qualities to Perlite. Primarily for the joints between boards. 24 $ 8. It is particularly easy and clean for processing. It is installed by pouring it into the desired location. Geological Survey has been studying the composition of 101 vermiculite-rich, archived samples from 62 domestic vermiculite mines and deposits in 10 States. Vermiculite Fire Board for cutting bricks for stoves & fires, pizza ovens & barbecues. Vitcas® Pompeii 100 wood fired oven is manufactured from eco-accumulation refractories. The expanded vermiculite (EV) exhibits prospective properties such as low thermal conductivity, low bulk density, endurance, chemical inertness and relatively high. For new lawns, spread a 1/4 inch layer evenly around the planted area just after you seed it, then. Ready-mixed blend of thermos-setting resins, high quality clay and inorganic fillers which cure when exposed to heat. . Business Type: Trading Company. Vermiculite boards are available in 1100 C and 1200 C grades. These products commonly contained 15% asbestos to 100% asbestos. 88 per m 2. Peat moss is more absorbent than vermiculite, so it can help to keep your plants hydrated. Vermiculite is a granule/pebble like pour-in, loose-fill product. Vermiculite, a durable silicate material, was sold for over 50 years in Australia before. Capacity of 4-5 pizzas at a time. Mandoval’s production facility is based in Alrode, Gauteng, South Africa with. Manuals & Downloads. Product code: 225437. The material can be used to fix boards to brickwork, blockwork etc. Vermiculite is a member of clay minerals, produced by the decompositions of micas and occurs as large crys- tals of mica-like habits. uk. PURPOSE: A vermiculite board manufacturing apparatus and a manufacturing method thereof are provided to enhance water resistance and strength by uniformly mixing the final mixture of vermiculite, silica sand, and a binder. Home. The use of vermiculite plates is aimed at improving the thermal insulation for both personal and industrial purposes. This Vermiculite fireboard is ideal for use as a fire surround or can be cut with a saw to fit inside a multi-fuel stove to replace the firebricks. Vermiculite is a gold-colored mineral substance of widespread occurrence which is available at competitive cost. ; Seed starting: Vermiculite as the sole material or in a potting. Add to Wish List. enordy. Provides fire resistance, insulation and thermal stability. I'm going to cast a vermiculite/high heat morter board today with hardware cloth inside to stiffen. Vermiculite is a hydrated magnesium aluminum silicate mineral, found in abundance across the globe, which resembles mica in appearance. Make sure you take regular breaks, stretch, keep the windows and. Post. 4 MPa (50. Vermiculite board is made from a naturally occurring aluminium-magnesium silicate layer that has been already expanded with the application of heat. FIPRO ® Technical specification * Reaction to fire (IMO Res. The use of vermiculite slabs is aimed at improving the thermal insulation for both personal and industrial purposes. Call 08048979474 66% Response Rate . It has a wide range of uses in construction, horticulture and gardening products, industrial applications and motor vehicles. 5, 0. You may have to register before you can post: click the register link above to proceed. Vermiculite Grade. 51. 03 Phyllosilicate Sheets of Six-Membered. Price and other details may vary based on product size and color. Palmetto Vermiculite Grade A-3 is a premium, coarse particle size material meeting ASTM C516 Type 1, Grade 2 specifications. Shop this Collection. Vermiculite is an insulating and fire-resistant mineral found in many homes built between 1930 and 1990. Cut a hole in the board just large enough to fit your ball so it rests firmly. Vermiculite board is the usual one used for a heat shield with woodburning stoves. go to shop read more. Vermiculite Fire Resistant Insulation Board is used as a head shield, register plate or as replacement fire bricks for wood burning or multi fuel stoves, fireplaces, and hobby kilns. I'm not sure why it is indicated that only fibre paper separators will work at fusing temperatures. Thanks, Craig. Measurements show that the thermal con ductivity of the loose vermiculite particles is in the range of 0. Peat. Get cut to size vermiculite fire board sheets from us. Top. Vermiculite Board 40in x 24in x 1in Truck Shipments Only. Vermiculite (Magnesium, Aluminum Iron Silicate) >98 1318-00-9 Not Available Not Available 10 1 Silica <1 14808-60-7 Not Available Not Available Not Available . Addison, J. 29+Vat. Prefire to 1580 degrees F (860 degrees C) for min. Replacement Herringbone Pattern Vermiculite Brick Panel for Ashley, Breckwell and US Stove pellet stoves. Follow instructions. Properties include: Non-Hazardous. Versatile Applications: The Vermiculite Fire Resistant Insulation Board finds use as a heat shield, register plate above free-standing stoves, and replacement fire bricks inside stoves. Vermiculite board can be cut or tooled like wood or particle board. e. com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment. Marty Posts: 859 Joined: Mon Mar 10, 2003 3:58 pm Location: Maine Contact: Contact Marty. Enhance fire resistance. Helps to retail nutrients resulting in faster growth rates and yields. Perlite is a lightweight sand substitute that is often used in potting mixes to improve aeration and texture. Features: Rigid Fire Resistant Board. With no waste and minimal clean up. £62. 600x280 (mm) 600x500 (mm) Wood burning stove insulation Fireplace insulations Easily cut with the. 64. Wisconsin for $8 a bag (4 cf), as opposed to $50-$65 a bag for a vermiculite mix sold by chimney stores online. Benefits of Vermiculite. Whether used alone, or in a mix, propagating a cutting with vermiculite will promote anchorage for new roots, and speed up root growth. Fire and water-resistant, mould and mildew. Vermiculite has a high cation-exchange capacity (CEC) at 100–150 meq /100 g. Post Reply. Bullseye Vermiculite Board (8240) Bullseye Vermiculite Box Kit (8247) Fiber Paper, 3 mm (7036) Juniper Blue Tint (001806-0065-F) for featured casting. Structure Vermiculite is a 2:1 clay, meaning it has two tetrahedral sheets for every one octahedral sheet.