
Aquamarine
Crystal Encyclopedia
Aquamarine is a beautiful gemstone and a variety of the mineral beryl. It is highly prized for its stunning blue to greenish-blue color, reminiscent of the clear waters of the sea, which gives it its name “aquamarine” (aqua meaning water and marine…

Natrolite
Crystal Encyclopedia
Haineaultite-Analcime-Natrolite Bombay Quarry, Mumbai District (Bombay District), Maharashtra, India
Natrolite is a tectosilicate mineral belong to zeolite group members.Its formula Na2Al2Si3O10 • 2H2O. A hydrated sodium aluminosilicate,…

Pyromorphite
Crystal EncyclopediaPyromorphite is a secondary lead mineral that forms in the oxidation zones of lead ore deposits. It is classified as a member of the apatite group of phosphates and has the chemical formula Pb5_55(PO4_44)3_33Cl. The mineral is primarily composed…

Aragonite
Crystal Encyclopedia Aragonite crystals. Aragonite is a variant of calcium carbonate, along with the mineral calcite. This sample, found in Morocco, is 4 centimetres long.
crystals of Aragonite mineral stone isolated on white background
Aragonite is a carbonate…

Cacoxenite
Crystal EncyclopediaCacoxenite is a mineral that is primarily composed of iron, aluminum, phosphate, and hydroxide ions. It is a relatively rare mineral and is often found as an accessory mineral in various types of rocks, particularly in association with iron ores and phosphates.…

Ilmenite
Crystal Encyclopedia Ilmenite an outstanding tabular group of large parallel-growth crystals
Ilmenite-magnetite by James St. John (Flickr.com)
Ilmenite, otherwise called manaccanite, is a titanium-iron oxide mineral with formula: FeTiO3. It is a noteworthy wellspring…

Goethite
Crystal EncyclopediaGoethite is a common iron oxide mineral that has a chemical formula of FeO(OH). It is often referred to as “limonite” although that term is used more broadly to describe a mixture of various iron oxides and hydroxides. Goethite is an important mineral…

Borax
Crystal EncyclopediaBorax, also known as sodium borate or sodium tetraborate, is a naturally occurring mineral that has been used for various purposes throughout history. It is composed of boron, sodium, oxygen, and water molecules. The chemical formula for borax is Na2B4O7·10H2O.…

Magnetite
Crystal EncyclopediaMagnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II,III) oxide, Fe2+Fe3+2O4 .It also as the name magnetic minerals to attracted to a magnet. It is the most magnetic natural occuring minerals in the…

Anatase
Crystal EncyclopediaAnatase is one of the three primary mineral forms of titanium dioxide (TiO2), the other two being rutile and brookite. It is a tetragonal mineral and a polymorph of TiO2, meaning that it shares the same chemical composition with rutile but has a different…

Cinnabar (Mercury)
Crystal Encyclopedia
Cinnabar is a naturally occurring mercury sulfide mineral with the chemical formula HgS. It is one of the most common and well-known sources of mercury. Cinnabar typically exhibits a striking red to reddish-brown color, which is often associated with…

Chalcopyrite
Crystal EncyclopediaChalcopyrite is a mineral and ore of copper. Its chemical composition is CuFeS2, meaning it contains copper (Cu), iron (Fe), and sulfur (S). Chalcopyrite is one of the most important copper ores and is widely distributed in various geological environments.…