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List Of Minerals Recognized By The International Mineralogical Association (R)
__TOC__ R Ra – Re # Raadeite (allactite: IMA1996-034) 8.BE.3 o (IUPAC: heptamagnesium octahydro diphosphate) # Rabbittite (Y: 1955) 5.ED.2 (IUPAC: tricalcium trimagnesium diuranyl tetrahydro hexacarbonate octadecahydrate) # Rabejacite (zippeite: IMA1992-043) 7.EC.1 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rambergite
Rambergite is a manganese sulfide mineral with formula . It has been found in anoxic marine sediments, rich in organic matter of the Gotland Deep, Baltic Sea and also in skarn in the Garpenberg area, Dalarna, Sweden. It was named after the mineralogist, Hans Ramberg (1917–1998).http://webmineral.com/data/Rambergite.shtml Webmineral data It is a member of the wurtzite group and is chemically related to Hauerite Hauerite is a manganese sulfide mineral with the chemical formula Mn S2. It forms reddish brown or black octahedral crystals with the pyrite structure and it is usually found associated with the sulfides of other transition metals such as ramber .... References Sulfide minerals Manganese(II) minerals Hexagonal minerals Minerals in space group 186 Minerals described in 1996 {{Manganese minerals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rakovanite
Rakovanite, (NH4)3Na3(V10O28) · 12H2O; formerly given as Na3(H3V10O28).15H2O; later, the ammonium ion was shown to be present and essential, is a member of the pascoite family. It is a transparent, brittle mineral occurring in the monoclinic crystal system. It is orange in color and has an orange-yellow colored streak. Rakovanite is soft with a Mohs hardness of 1 and a calculated density of 2.407g cm−3. It does not fluoresce in long- or short-wave ultraviolet radiation. Rakovanite crystals are up to one mm in maximum dimension and vary in habit from blocky to prismatic on 01 commonly exhibiting steps and striations parallel to 01 Its name honors John Rakovan, former professor, Department of Geology and Environmental Earth Science, Miami University, State Mineralogist and Senior Museum CuratorNew Mexico Bureau of Geology and Mineral Resources Occurrence Rakovanite was found on specimens from the Sunday mine and the West Sunday mine, Slick Rock district, San Miguel County, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
