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Minasgeraisite-(Y) Mineral Data |
General Minasgeraisite-(Y) Information |
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CaY2Be2Si2O10 | ||
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Molecular Weight = 452.08 gm | ||
Calcium 8.87 % Ca 12.40 % CaO | |||
Yttrium 39.33 % Y 49.95 % Y2O3 | |||
Beryllium 3.99 % Be 11.07 % BeO | |||
Silicon 12.43 % Si 26.58 % SiO2 | |||
Oxygen 35.39 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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CaY2Be2(Si2O10) | ||
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Granitic pegmatites. | ||
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Approved IMA 1986 | ||
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The Jaguaracu Pegmatite, Minas Gerais, Brazil. Also known as the Jose Miranda mine or the Ze Pinto or Jose Pinto mine. Link to MinDat.org Location Data. | ||
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Named after its locality. | ||
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Minasgeraisite-(Y) + Pronunciation ![]() |
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Minasgeraisite-(Y) Image | |||
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Minasgeraisite-(Y) Crystallography |
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a:b:c =1.3003:1:0.6217 | ||
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a = 9.833, b = 7.562, c = 4.702, Z = 2; beta = 90.46° V = 349.62 Den(Calc)= 4.29 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a | ||
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By Intensity(I/Io): 2.83(1), 3.11(1), 2.54(0.9), | ||
Physical Properties of Minasgeraisite-(Y) |
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{001} Perfect | ||
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Violet, Lilac, Purple. | ||
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4.25 | ||
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Translucent | ||
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Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. | ||
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Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat. | ||
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6-7 - Orthoclase-Quartz | ||
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Non-fluorescent. | ||
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Vitreous - Dull | ||
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pale purple white | ||
Optical Properties of Minasgeraisite-(Y) |
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CI meas= 0.073 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1772,KPDmeas= 0.1788,KC= 0.1928 Ncalc = 1.82 - 1.83 |
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Biaxial (+), a=1.74, b=1.754, g=1.786, bire=0.0460, 2V(Calc)=68, 2V(Meas)=68. | ||
Calculated Properties of Minasgeraisite-(Y) |
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Bulk Density (Electron Density)=4.02 gm/cc note: Specific Gravity of Minasgeraisite-(Y) =4.25 gm/cc. |
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Fermion Index = 0.04 Boson Index = 0.96 |
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PEMinasgeraisite-(Y) = 50.42 barns/electron U=PEMinasgeraisite-(Y) x rElectron Density= 202.89 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Minasgeraisite-(Y) is Not Radioactive |
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Minasgeraisite-(Y) Classification |
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54.02.01b.06 (54)Nesosilicate Borosilicates and Some Beryllosilicates | ||
(54.02)with B in [4] coordination | |||
(54.02.01b)Datolite group (Homilite series) | |||
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09.AJ.20 09 - SILICATES (Germanates) | ||
09.A - Nesosilicates | |||
09.AJ -Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, | |||
Other Minasgeraisite-(Y) Information |
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NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.71,p603-607,1986) OPTIC PROP.(Am.Min.,Vol.71,p603-607,1986) | ||
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Links to other databases for Minasgeraisite-(Y) : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - GeoScienceWorld 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (UofA) 8 - MinDAT 9 - Mineralienatlas (Deutsch) 10 - Online Mineral Museum 11 - QUT Mineral Atlas 12 - Ruff.Info Search for Minasgeraisite-(Y) using: Visit our Advertisers for Minasgeraisite-(Y) : Ask about Minasgeraisite-(Y) here : Print or Cut-and-Paste your Minasgeraisite-(Y) Specimen Label here :
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