Spar is an old mining or mineralogy term used to refer to crystals that have readily discernible faces. A spar will easily break or cleave into rhomboidal...

Assisted Reproduction Spar (mineralogy), a crystal with readily discernible faces Spar (platform), a type of floating oil platform Spar (tree), part of a...

Selenite, satin spar, desert rose, and gypsum flower are crystal habit varieties of the mineral gypsum. All varieties of gypsum, including selenite and...

standpoint of classical mineralogy. Selenite is a fibrous variety of gypsum,: 527  the most common form of satin spars; Gypsum, satin spar: 429  in the form...

surface geology and mineralogy also plays a role in identifying potential mineralization zones. The mining process for Iceland spar varies based on the...

professionals, the term alabaster is used not just as in geology and mineralogy, where it is reserved for a variety of gypsum; but also for a similar-looking...

as an industrial and chemical commodity, while "fluorite" is used mineralogically and in most other senses. In archeology, gemmology, classical studies...

Smithsonite, also known as zinc spar, is the mineral form of zinc carbonate (ZnCO3). Historically, smithsonite was identified with hemimorphite before...

have been used for baryte, including barytine, barytite, barytes, heavy spar, tiff, and blanc fixe. Baryte occurs in many depositional environments, and...

Lazulite Turquoise Feldspars Satin Spar Blue pigments Hauyne Ultramarine Azurite Krivovichev V. G. Mineralogical glossary. Scientific editor A. G. Bulakh...

of the dolomite-siderite series, to which the terms brown-spar, pearl-spar and bitter-spar have been historically loosely applied. It was first recognized...

lustre reminiscent of silk. Examples include asbestos, ulexite and the satin spar variety of gypsum. A fibrous lustre is similar, but has a coarser texture...

of Europe Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm...

Kenneth W.; Nichols, Monte C. (2005). "Cassiterite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved 19 June 2022. "Cassiterite". Mindat...

Feldspar (/ˈfɛl(d)ˌspɑːr/ FEL(D)-spar; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations...

Azurite or Azure spar: 14  is a soft, deep-blue copper mineral produced by weathering of copper ore deposits. During the early 19th century, it was also...

Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a rare form of fluorite with bands of a purple-blue or yellowish colour. In the United...

; Mason, Brian; Rosensweig, Abraham (1997). Dana's new mineralogy : the system of mineralogy of James Dwight Dana and Edward Salisbury Dana (8th, entirely...

information and data". www.mindat.org. Retrieved 17 April 2018. "Handbook of Mineralogy" (PDF). Barthelmy, Dave. "Orthoclase Mineral Data". www.webmineral.com...

Lazulite or Azure spar: 14  is a transparent to semi-opaque, blue mineral that is a phosphate of magnesium, iron, and aluminium, with the chemical formula...

Lazurite, old name Azure spar: 14  is a tectosilicate mineral with sulfate, sulfur and chloride with formula (Na,Ca)8[(S,Cl,SO4,OH)2|(Al6Si6O24)]. It is...

1833 – February 26, 1901) was a German mineralogist and professor of mineralogy at the mining academy at Freiberg. He studied various minerals and described...

scalenohedron and the obtuse rhombohedron, thus resembling calcite (dog-tooth-spar) in habit. The color is scarlet-vermilion and the luster adamantine; crystals...

Edinburgh. The Nicol prism consists of a rhombohedral crystal of Iceland spar (a variety of calcite) that has been cut at an angle of 68° with respect...

stone", referring to its crystalline projections. Thus, the word spar in mineralogy, by comparison to gypsum, refers to any non-ore mineral or crystal...

mineral names, see List of minerals recognized by the International Mineralogical Association. Contents Top A B C D E F G H I J K L M N O P Q R S T U...

Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". Despite the similarity of their names, chrysoberyl and beryl are two completely...

that, at times, has been used in building construction. Mica and calcareous spar often accompany these sandstone beds.[citation needed] Due to the volcanic...

mineral species, but a reclassification in 1997 by the International Mineralogical Association changed it to a series name, with the mineral species being...

layer of brown calcite and an inner (late stage) layer of yellow calcite spar, which often, but not always, completely fills the cracks. Rare Moeraki Boulders...