datolite


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datolite

[′dad·əl‚īt]
(mineralogy)
CaBSiO4(OH) A mineral nesosilicate crystallizing in the monoclinic system; luster is vitreous, and crystals are colorless or white with a greenish tinge.
References in periodicals archive ?
Quartz and datolite, two of the earliest minerals to form, are the main constituents inside cavities at the bottom of zone 4 (the lowermost of the four zones).
In the higher-temperature environment quartz deposition declined markedly as other elements, mainly calcium, aluminum and boron, united with silica to form prehnite, datolite and other silicates.
As far as is known, only one report of crystal twinning in datolite is found in the literature.
The geochemically associated non-zeolite minerals prehnite, datolite and the apophyllite series were also noted at a number of localities.
Pezzotta describes the best specimens there (not only orthoclase, but also quartz, fluorite, datolite, babingtonite etc.).
Fengjiashan Hubei amethyst, apophyllite, braunite, calcite, chalcopyrite, datolite, hubeite, ilvaite, inesite, japanese twins, pyrite, stilbite/stellarite, wollastonite Fenglin Jiangxi chalcocite Fengsandong Hubei amethyst, bornite, apophyllite, chalcopyrite, datolite, inesite, molybdenite, pyrite, parsettensite, stilbite Fushan Hebei vesuvianite, hematite Fushun Liaoning amber Fuyun Xinjiang, aquamarine, fluorite, garnet, hiddennite, Uygur A.R.
This quarry is best known for its outstanding datolite and (rarely) babingtonite specimens, but these new white, translucent scalenohedrons and compound scalenohedrons of calcite, reaching 10 cm, are no poor sisters either.
(1965) The accessory minerals from Predazzo granite (North Italy), Part III (datolite, gadolinite, hellandite, ancylite, synchisite, uraninite).
Also in the case were a huge 4.8-cm anatase crystal and a 10-cm plate of gemmy yellow datolite along with a matching faceted datolite stone.
For the mineral collector there was plenty more to choose from, including fine green datolite from Charcas, Mexico.
At Wessels mine, ruizite is found with quartz, datolite, pectolite, otientite, inesite and apophyllite (Wilson and Dunn, 1978).
Datolite (?) [Ca.sub.2][B.sub.2][Si.sub.2][O.sub.8][(OH).sub.2]