Geographic Minerals

Naldrettite: Properties and Occurrences

Naldrettite: Properties and Occurrences

Naldrettite is a mineral with a chemical formula of Pd2Sb. It is a new intermetallic mineral discovered in the Mesamax Northwest deposit, Cape Smith folds belt, Ungava region, northern Québec. It is named after Anthony J. Naldrett (born 1933), a professor at the University of Toronto, who has ma.....

Read More »

Dolomite (Properties, Uses)

Dolomite (Properties, Uses)

Dolomite (otherwise called dolomite rock, dolostone, or dolomitic stone), kind of limestone, the carbonate part of which is overwhelmed by the mineral dolomite, calcium magnesium carbonate (CaMg(CO3)2). It is a typical stone shaping mineral; it is the essential part of the sedimentary stone known.....

Read More »

Nahcolite: Properties and Occurrences

Nahcolite: Properties and Occurrences

Nahcolite is a mineral consisting of natural sodium bicarbonate. It is a soft, colorless, or white carbonate mineral with the composition of sodium bicarbonate (NaHCO3) also called thermokalite. It is the natural mineral most familiar to us as Sodium Bicarbonate or Sodium Hydrogen Carbonate or (m.....

Read More »

Nagyágite: Properties and Occurrences

Nagyágite: Properties and Occurrences

Nagyágite [Pb5Au(Te, Sb)4S5-8] is a rare sulfide mineral with a known occurrence associated with gold ores. It is a mineral that is a sulfide of lead, gold, tellurium, and antimony. It is a monoclinic (pseudotetragonal) telluride, antimonide, and sulfide of lead and gold, occurring as dark grey .....

Read More »

Fuchsite (Mineral)

Fuchsite (Mineral)

Fuchsite is a type of mica/Muscovite that crystallizes in the form of a plate such as layers, scales, masses, and tabular crystals, also known as chrome mica. It is a chromium (Cr) rich muscovite mineral type, belonging to the phyllosilicate mineral mica group, with the chemical formula K(Al,Cr)2.....

Read More »

Coesite – a form of silicon dioxide

Coesite – a form of silicon dioxide

Coesite is a high-pressure polymorph (crystal form) of silica, silicon dioxide (SiO2). It is a form (polymorph) of silicon dioxide SiO2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700°C, 1,300°F), are applied to quartz. Coesite was first synthesi.....

Read More »

Lechatelierite – a natural silica glass

Lechatelierite – a natural silica glass

Lechatelierite is a natural silica glass that has the same chemical composition as coesite, cristobalite, stishovite, quartz, and tridymite but has a different crystal structure. It is silica glass, amorphous SiO2, non-crystalline mineraloid. It is an amorphous form of silicon dioxide (SiO2), lac.....

Read More »

Nadorite: Properties and Occurrences

Nadorite: Properties and Occurrences

Nadorite is a mineral with the chemical formula PbSbO2Cl. It is a mineral consisting of a brownish yellow lead chloride and stibnite. It is a mineral containing antimony, lead, oxygen, and chlorin, occurring in brownish orthorhombic crystals at Djebel-Nador in Algeria. The Nadorite crystals are a.....

Read More »

Seifertite – a silicate mineral

Seifertite – a silicate mineral

Seifertite is an orthorhombic mineral containing oxygen and silicon. It is a silicate mineral with the formula SiO2 and is one of the densest polymorphs of silica.  It is a dense orthorhombic polymorph of silica from the Martian meteorites Shergotty and Zagami. However, the stable crystal struct.....

Read More »

Smithsonite Mineral

Smithsonite Mineral

Zinc carbonate (ZnCO3), a mineral that was the main source of zinc until the 1880s, when it was substituted by sphalerite, is Smithsonite, also known as turkey fat or zinc spar. It is a secondary mineral mainly formed in the presence of CO2 by the weathering and alteration of sphalerite. The oxid.....

Read More »

Nacrite: Properties and Occurrences

Nacrite: Properties and Occurrences

Nacrite is a clay mineral, consisting of hydrous silicate of aluminum and being polymorphous with kaolinite. Its formula, Al2Si2O5(OH)4, is a clay mineral that is polymorphous (or polytypic) with kaolinite. It is the rarest of the kaolin polymorphs known. It is basic aluminum silicate clay that i.....

Read More »

Clastic Rock

Clastic Rock

Deposited sediments can harden into rock over time; next, it compacts the sediments. That is, by the weight of sediments on top of them, they are pressed together. Next, together, the sediments are cemented. In the gaps between the loose sediment particles, minerals fill up. From the water that p.....

Read More »