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Aluminium silicate is a type of fibrous material made of aluminium oxide and silicon dioxide, (such materials are also called aluminosilicate fibres). These are glassy solid solutions rather than chemical compounds. The compositions are often described in terms of % weight of alumina, Al 2 O 3 and silica, SiO 2. Temperature resistance increases ...
Fraipontite is a zinc aluminium silicate mineral with a formula of (Zn,Al) 3 (Si,Al) 2 O 5 (OH) 4. [2] [3] It is a member of the kaolinite-serpentine mineral group and occurs as an oxidation product of zinc deposits. It occurs with smithsonite, gebhardite, willemite, cerussite and sauconite. [2]
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The aluminosilicate framework of LTA-type zeolite (left) and FAU-type zeolite (right). Vertices = Al or Si, oxygen atoms are not shown. Feldspar is a common tectosilicate aluminosilicate mineral made of potassium, sodium, and calcium cations surrounded by a negatively charged network of silicon, aluminium and oxygen atoms.
These oxygen and aluminum tetrahedra connect by their corners. It is a sorosilicate because two silicate tetrahedra connect at their corners and an aluminum tetrahedra is then attached to each end forming a zig-zag structure. Every second aluminum tetrahedron is attached to a hydroxide ion and the structure is interrupted.
Tacharanite is a calcium aluminium silicate hydrate (C-A-S-H) mineral of general chemical formula Ca 12 Al 2 Si 18 O 33 (OH) 36 with some resemblance to the calcium silicate hydrate (C-S-H) mineral tobermorite. It is often found in mineral assemblage with zeolites and other hydrated calcium silicates.
Brewsterite-Sr, the more common of these, is a hydrous strontium and aluminium silicate, (Sr,Ba) 2 Al 4 Si 12 O 32 ·10H 2 O. Small amounts of barium is usually present replacing part of the strontium. The appropriate species name depends on the dominant element.
Analcime (/ ə ˈ n æ l s iː m,-s aɪ m /; from Ancient Greek ἀνάλκιμος (análkimos) 'not strong') or analcite is a white, gray, or colorless tectosilicate mineral. Analcime consists of hydrated sodium aluminium silicate in cubic crystalline form.