BENTONITE

BENTONITE

Bentonite is a clay generated frequently from the alteration of volcanic ash, consisting predominantly of smectite minerals, usually montmorillonite. Other smectite group minerals include hectorite, s  More »

SILICA

SILICA

The name Silica covers a range of minerals composed of silicon and oxygen, the two most abundant elements in the earth’s crust. Silica exists in ten different crystalline forms. By far the most   More »

ZEOLITES

ZEOLITES

The Zeolites are a popular group of minerals for collectors and an important group of minerals for industrial and other purposes. They combine rarity, beauty, complexity and unique crystal habits  More »

BORON

BORON

BORON, a semi-metallic element, exhibits some properties of metal as well as of non-metal. It is dark, amorphous and unreactive solid in its elemental form. It occurs abundantly in the borax ore. The   More »

CALCITE

CALCITE

CALCITE is a carbonate of lime (CaCo3). It crystallizes in rhombohedron class. It is also known by the name calc-spar. It is white in colour but is also found in various shades like pink, brown etc.,  More »

DOLOMITE

DOLOMITE

Dolomite is commonly found in deposits of a sedimentary rock called dolostone. There are two types of materials often called dolomite, a true chemically uniform calcium magnesium carbonate with the ch  More »

KAOLIN

KAOLIN

Kaolin is nearly white in color.  It is distinguished from other industrial clays based on its fine particle size and pure coloring.  Its ability to disperse in water make it an ideal pigmen  More »

MAGNESITE

MAGNESITE

Magnesite is a compound of magnesium, its chemical formula is MgC03, and its color varies between white, yellow, grey and brown. It is found in nature as cryptocrystalline and crystalline. It is a   More »

PERLITE

PERLITE

Perlite is an amorphous volcanic glass which has a relatively high water content and occurs naturally. It has one of the most unusual property, i.e. it greatly expands when sufficiently heated. Per  More »

SEPIOLITE

SEPIOLITE

Sepiolite is a naturally occurring clay mineral of sedimentary origin. It is a non swelling, lightweight, porous clay with a large specific surface area. Chemically, sepiolite is a hydrous magnesium s  More »

FELDSPAR

FELDSPAR

FELDSPAR comprises a group of minerals containing potassium, sodium, calcium and aluminium silicates. They are the most common rock-forming minerals. The common feldspar is potassium feldspar, namely,  More »

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