
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…

Eosphorite
minerals
Eosphorite is a mineral belonging to the group of phosphates. It typically forms in pegmatite veins, which are coarse-grained igneous rocks found in association with granite. Eosphorite is known for its distinctive pink to purple coloration, often 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.…

Gypsum
mineralsGypsum is a naturally occurring mineral that has been used by humans for various purposes for thousands of years. It is a versatile mineral with a wide range of applications in construction, agriculture, industry, and even art. In this introduction, we’ll…

Halite
mineralsHalite, also known as rock salt or sodium chloride (NaCl), is a naturally occurring mineral that holds significant importance in various aspects of human life. This crystalline mineral is composed of equal parts sodium and chlorine ions and is renowned…

Vermiculite
mineralsVermiculite is a naturally occurring mineral that has gained significant attention due to its unique properties and various applications. It is a hydrated, laminar, and micaceous mineral belonging to the phyllosilicate group. Vermiculite has a layered…