- greisen deposit
- грейзеновое месторождение
English-Russian mining dictionary. В.П. Манышев.
greisen deposit
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Greisen — is a highly altered granitic rock or pegmatite. Greisen is formed by autogenic alteration of a granite and is a class of endoskarn.Greisens appear as highly altered rocks, partly coarse, crystalline granite, partly vuggy with miarolitic cavities … Wikipedia
Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… … Wikipedia
Hemerdon Mine — pits near Lee Moor. The mine, out of operation since 1944, hosts one of the largest tungsten and tin deposits in the world. [ [http://www.mineweb.com/mineweb/view/mineweb/en/page674?oid=41265 sn=Detail Mineweb Article] ]… … Wikipedia
Breccia — (pronEng|ˈbrɛtʃiə, ˈbrɛʃiə, it. breach) is a rock composed of angular fragments of several minerals or rocks in a matrix, that is a cementing material, that may be similar or different in composition to the fragments. A breccia may have a variety … Wikipedia
Clastic rock — A thin section of a clast (sand grain), derived from a basalt score. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross polarized light below. Scale box is 0.25 mm Clastic rocks are composed of fragments, or clasts … Wikipedia
Kazanlak — Infobox City official name = Kazanlak nickname = The Town of the Roses and of the Thracian Kings motto = imagesize = image caption = The Center of Kazanlak image pushpin pushpin mapsize =300 map caption = Location of Kazanlak on a map of Bulgaria … Wikipedia
Stockwork — In geology, a stockwork is a complex system of structurally controlled or randomly oriented veins. Stockworks are common in many ore deposit types and especially notable in greisens. They are also referred to as stringer zones … Wikipedia
