Fornacite: Properties and Occurrence
Fornacite is a rare lead, copper chromate arsenate hydroxide mineral with the formula: Pb2Cu(CrO4)(AsO4)(OH). It is a monoclinic-prismatic mineral containing arsenic, chromium, copper, hydrogen, lead,…
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Classification of Triangles on the Basis of their Angles
Triangle is a plane figure with three straight sides and three angles. The three angles always add to 180°. The vertex is a corner of the…
Fluorite: Properties and Occurrence
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It is a halide mineral composed of calcium fluoride. It crystallizes in isometric…
Fluorellestadite
Fluorellestadite is a rare nesosilicate of calcium, with sulfate and fluorine, with the chemical formula Ca10(SiO4)3(SO4)3F2. It is a rare nesosilicate of calcium, with sulfate…
Fluororichterite
Fluororichterite is a rare amphibole with formula Na(NaCa)Mg5Si8O22F2. It was recognized by the International Mineralogical Association in 1994. Its name is derived from its fluorine…
Classification of Triangles on the Basis of their Sides
Triangle is a plane figure with three straight sides and three angles. The three angles always add to 180°. The vertex is a corner of the…
Fluorcaphite: Properties and Occurrences
Fluorcaphite is a mineral with the chemical formula (Ca, Sr, Ce, Na)5(PO4)3F. It is a hexagonal-pyramidal mineral containing calcium, cerium, fluorine, oxygen, phosphorus, sodium, and…
Fluorapophyllite
Fluorapophyllite is a mineral of the apophyllite group, with the chemical formula of KCa4Si8O20(F, OH)·8(H2O). It is a particular apophyllite mineral with more fluorine than…
Medians of a Triangle
Medians of a Triangle A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side. Triangle is…
Fluorapatite: Properties and Occurrences
Fluorapatite, often with the alternate spelling of fluoroapatite, is a phosphate mineral with the formula Ca5(PO4)3F (calcium fluorophosphate). It is a crystalline mineral, formed from…
Fluor-uvite
Fluor-uvite is a tourmaline mineral with the chemical formula CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3F. It is a rare mineral that is found in calcium-rich contact metamorphic rocks with increased…
Fluor-liddicoatite
Fluor-liddicoatite is a rare member of the tourmaline group of minerals and elbaite subgroup. It forms a series with elbaite and probably also with olenite.…
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