Argyrodite is an uncommon silver germanium sulfide mineral with formula Ag8GeS6. It is a rare silver germanium sulfide mineral. The color is iron-black with a purplish tinge, and the luster metallic. It was first discovered in the silver mining area of Freiberg, Saxony, Germany in the Himmelsfurs.....
Argutite, formula- (GeO2) is a rare germanium oxide mineral. It is a member of the rutile group. It was first described as an occurrence in the Argut deposit, central Pyrenees, Haute-Garonne, France in 1983. The type locality is within a zinc ore deposit within lower Paleozoic sedimentary rocks t.....
Argentite is silver sulfide mineral, is an important constituent of silver ore deposits. In mineralogy, argentite is cubic silver sulfide (Ag2S), which can only exist at temperatures above 173°C, 177°C, or 179°C. It contains 87% silver and forms blackish-gray coatings or masses with a metallic.....
Ardaite is a very rare sulfosalt mineral with chemical formula Pb19Sb13S35C17 in the monoclinic crystal system, named after the Arda river, which passes through the type locality. Ardaite is a rare sulfosalt mineral, discovered in 1980 from Madjarovo, Arda River, Bulgaria. It was named after its .....
Arcubisite (Ag6CuBiS4) is a sulfosalt mineral occurring with cryolite in Greenland. Optical properties and chemical compositions are given; X-ray crystallographic data could not be obtained due to insufficient material. It’s named after its composition (Argentum, CUprum, and BISmuth). It is not.....
Arctite, [formula- Na2Ca4(PO4)3F] is a colorless mineral found in the Kola Peninsula northern Russia. It is a rare mineral that can be found only in the Khibiny and Lovozero massifs in the Kola Peninsula in the Northern region of Russia. It was named after the type locality as being in the Arctic.....
Archerite is a phosphate mineral with chemical formula (K, NH4)H2PO4. It’s named after Michael Archer (born 25 March 1945), professor of Biology, University of New South Wales. It occurs as a component of stalactites and crusts on the walls of caves containing bat guano deposits. Its type l.....
Arcanite is a potassium sulfate mineral with formula: K2SO4. This mineral belongs to Sulfate minerals. You can know more about the Physical Properties of Arcanite and find out all the aspects pertaining to the appearance and form of a mineral. Arcanite was first described in 1845 for an occurrenc.....
Aragonite is a carbonate mineral, one of the two most common, naturally occurring, crystal forms of calcium carbonate, CaCO3 (the other forms being the minerals calcite and vaterite). Calcium carbonate forms as both Aragonite and Calcite, and these two minerals only differ in their crystallizatio.....
The name apophyllite refers to a specific group of phyllosilicates, a class of minerals. Apophyllite, whose name roughly means “to leaf apart” in Greek, is a mineral classic. Originally, the group name referred to a specific mineral, but was redefined in 1978 to stand for a class of m.....
Aphthitalite is a potassium sulfate mineral with the chemical formula: (K, Na)3Na(SO4)2. It is a mineral consisting of potassium sodium sulfate occurring massive or in white rhombohedral crystals. It was first described in 1835 for an occurrence on Mt. Vesuvius, Italy. The name is from the Greek .....
An apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite, and chlorapatite, with high concentrations of OH−, F−, and Cl− ions, respectively, in the crystal. The primary Apatite group includes Fluorapatite, Chlorapatite, and Hydroxylapatite. The three a.....