Idocrase
21Metamorphic rock — Metamorphic redirects here. For other uses, see Metamorphic (disambiguation). Quartzite, a form of metamorphic rock, from the Museum of Geology at University of Tartu collection. Metamorphic rock is the transformation of an existing rock type,… …
22List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …
23List of chemistry topics — This page aims to list articles related to chemistry. This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.This list is not necessarily… …
24Skarn — is a metamorphic rock that is usually variably colored green or red, occasionally grey, black, brown or white. It usually forms by chemical metasomatism of rocks during metamorphism and in the contact zone of magmatic intrusions like granites… …
25Silicate minerals — The silicate minerals make up the largest and most important class of rock forming minerals, constituting approximately 90 percent of the crust of the Earth. They are classified based on the structure of their silicate group. Silicate minerals… …
26Aberdeenshire (historic) — County of Aberdeen Aberdeenshire within Scotland in 1890 Geography Status County (until 1975) …
27Везувиан — [по вулкану Везувий] м л, изоморфный ряд с крайними членами: Ca9(Al, Fe3+)6[(OH)4|(SiO4)5|(Si2O7)2] Ca9(Ca,Mg)(Mg,Fe2+)2(Al, Fe3+)4[(OH)4|(SiO4)5|(Si2O7)2]. Известны замещения: Ca Mn Na TR(Ce): Ca Mg; Al[IV] Si, 3Ti 4Fe3+; O 2(OH, F). Реже… …
28Arbizon — L Arbizon vue du nord est Géographie Altitude 2 831 m Massif Massif de l Arbizon Pyrénées …
29Cyprine (Minéral) — Vésuvianite Vésuvianite Catégorie IX : silicates Vésuvianite monocristal (4.2x2.5cm) Sierra de la Cruz Mexique …
30Cyprine (mineral) — Vésuvianite Vésuvianite Catégorie IX : silicates Vésuvianite monocristal (4.2x2.5cm) Sierra de la Cruz Mexique …
