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Roselite Mineral Data + |
General Roselite Information |
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| Ca2(Co,Mg)(AsO4)2·2(H2O) | |||
| Molecular Weight = 444.30 gm | |||
| Calcium 18.04 % Ca 25.24 % CaO | |||
| Magnesium 1.37 % Mg 2.27 % MgO | |||
| Cobalt 9.95 % Co 12.65 % CoO | |||
| Arsenic 33.73 % As 51.73 % As2O5 | |||
| Hydrogen 0.91 % H 8.11 % H2O | |||
| Oxygen 36.01 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Ca2Co0.75Mg0.25(AsO4)2·2(H2O) | |||
| Valid Species (Pre-IMA) 1825 | |||
| Rappold mines, Schneeberg, Saxony, Germany. Rosas mine at Sulcis, Sardinia. Link to MinDat.org Location Data. | |||
| Named after Gustave Rose (1798-1873), professor on mineralogy at the University of Berlin, Germany. | |||
| ICSD 200126 | |||
| PDF 29-315 | |||
Roselite Image | |||
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Roselite Crystallography |
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| a:b:c =0.4466:1:0.4324 | |||
| a = 5.801, b = 12.989, c = 5.617, Z = 2; beta = 107.42° V = 403.83 Den(Calc)= 3.65 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | |||
| By Intensity(I/Io): 2.99(1), 3.22(0.8), 3.35(0.6),2.76(0.5), 3.4(0.3), 5.09(0.2), 6.44(0.2), 3.75(0.1), | |||
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Physical Properties of Roselite |
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| [010] Perfect, [???] Good | |||
| Dark rose red, Pink. | |||
| 3.69 | |||
| Transparent to translucent | |||
| Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. | |||
| Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite). | |||
| Spherical - Spherical, rounded aggregates. | |||
| 3.5 - Copper Penny | |||
| Vitreous (Glassy) | |||
| light red | |||
Optical Properties of Roselite |
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| CI meas= -0.032 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.043 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1998,KPDmeas= 0.1977,KC= 0.1916 |
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| Biaxial (-), a=1.725, b=1.728, g=1.735, bire=0.0100, 2V(Calc)=68, 2V(Meas)=small. Dispersion r > v weak. | |||
| dark rose. | |||
| pale rose. | |||
| paler rose. | |||
Calculated Properties of Roselite |
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relectron=3.54 gm/cc |
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| Fermion Index = 0.00178 Boson Index = 0.99822 |
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PERoselite = 28.49 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Roselite is Not Radioactive |
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Roselite Classification |
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| 40.2.3.1 (40)Hydrated Phosphates, etc | |||
| (40.2)where A++ (B++)2 (XO4) · x(H2O) | |||
| (40.2.3)Roselite Subgroup (Monoclinic: P21/c) | |||
| VII/C.17-100 VII - Phosphates, Arsenates and Vanadates | |||
| VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+ | |||
| VII/C.17 - Collinsite - Wendwilsonite series | |||
Other Roselite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Roselite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - MinMax(Deutsch) 12 - MinMax(English) 13 - Mineralienatlas (Deutsch) 14 - QUT Mineral Atlas 15 - Ruff.Info 16 - WWW-MINCRYST Search for Roselite using: Visit our Advertisers for Roselite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Roselite Mineral Data : Ask about Roselite here : Print or Cut-and-Paste your Roselite Specimen Label here :
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