List of articles in "Chemical Substance" category - Page 971

Forsterite (Mg2SiO4) is the magnesium rich end-member of the olivine solid solution series. Forsterite crystallizes in the orthorhombic system (space group Pbnm) with cell parameters a 4.75 Å (0.475 nm) […]

Chrysocolla is a hydrated copper cyclosilicate mineral with formula: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x<1) or (CuAl)2H2Si2O5(OH)4·nH2O. The structure of the mineral has been questioned as spectrographic studies suggest material identified as chrysocolla may […]

Skutterudite is a cobalt arsenide mineral that has variable amounts of nickel and iron substituting for cobalt with a general formula: (CoNiFe)As3. Some references give the arsenic a variable formula […]

Allantoin is a chemical compound with formula C4H6N4O3. It is also called 5-ureidohydantoin or glyoxyldiureide. It is a diureide of glyoxylic acid.[citation needed]Named after the allantois (an amniote embryonic excretory […]

Potassium alum potash alum tawas or potassium aluminum sulfate is a chemical compound: the potassium double sulfate of aluminium. Its chemical formula is KAl(SO4)2 and it is commonly found in […]

Polyvinyl butyral (or PVB) is a resin usually used for applications that require strong binding optical clarity adhesion to many surfaces toughness and flexibility. It is prepared from polyvinyl alcohol […]

Benitoite (pronounced /bɛn.ˈi.toʊ.aɪt/) is a rare blue barium titanium silicate mineral found in hydrothermally altered serpentinite. Benitoite fluoresces under short wave ultraviolet light appearing bright blue to bluish white in […]

Vivianite (Fe2+Fe2+2(PO4)2·8H2O) is a hydrated iron phosphate mineral found in a number of geological environments. Small amounts of manganese Mn2+ magnesium Mg and calcium Ca may substitute for iron Fe2+ […]

Variscite is a hydrated aluminium phosphate mineral (AlPO4·2H2O). It is a relatively rare phosphate mineral. It is sometimes confused with turquoise; however variscite is usually greener in color.Variscite is a […]

Uvarovite is a chromium-bearing garnet group species with the formula: Ca3Cr2(SiO4)3. It was discovered in 1832 by Germain Henri Hess who named it after Count Sergei Semenovitch Uvarov (1765–1855) a […]