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Rhodochrosite Mineral Data + |
General Rhodochrosite Information |
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| MnCO3 | |||
| Molecular Weight = 114.95 gm | |||
| Manganese 47.79 % Mn 61.71 % MnO | |||
| Carbon 10.45 % C 38.29 % CO2 | |||
| Oxygen 41.76 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mn2+(CO3) | |||
| Commonly forms during oxidation of Mn-bearing ores in a carbonate environment. | |||
| Valid Species (Pre-IMA) 1800 | |||
| Cavnic (Kapnik), Maramures, Romania Link to MinDat.org Location Data. | |||
| From the Greek rhodon -"rose" and chroma - "color." | |||
| Dialogite | |||
| ICSD 100677 | |||
| Manganese spar | |||
| PDF 44-1472 | |||
Rhodochrosite Image | |||
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Rhodochrosite Crystallography |
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| a:c = 1:3.2803 | |||
| a = 4.777, c = 15.67, Z = 6; V = 309.68 Den(Calc)= 3.70 | |||
| Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3c | |||
| By Intensity(I/Io): 2.84(1), 1.763(0.35), 3.66(0.35), | |||
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Physical Properties of Rhodochrosite |
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| [1011] Perfect, [1011] Perfect, [1011] Perfect | |||
| Pinkish red, Red, Rose red, Yellowish gray, Brown. | |||
| 3.69 | |||
| Translucent to subtranslucent | |||
| Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | |||
| Botryoidal - "Grape-like" rounded forms (e.g.. malachite). | |||
| Columnar - Forms columns | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| 3 - Calcite | |||
| None. | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Rhodochrosite |
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| CI meas= 0.055 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.057 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1908,KPDmeas= 0.1913,KC= 0.2024 |
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| Uniaxial (-), e=1.596-1.598, w=1.814-1.816, bire=0.2180. | |||
Calculated Properties of Rhodochrosite |
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relectron=3.53 gm/cc |
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| Fermion Index = 0.00134 Boson Index = 0.99866 |
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PERhodochrosite = 12.46 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Rhodochrosite is Not Radioactive |
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Rhodochrosite Classification |
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| 14.1.1.4 (14)Anhydrous Carbonates | |||
| (14.1)with Simple Formula A+ CO3 | |||
| (14.1.1)Calcite Group (Trigonal: R3¯c) | |||
| V/B.02-50 V - Nitrates, Carbonates and Borates | |||
| V/B - Waterfree carbonates [CO3]2- without unfamiliar anions | |||
| V/B.02 - Calcite group | |||
Other Rhodochrosite Information |
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| NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68) | |||
| Links to other databases for Rhodochrosite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - CalTech Mineral Spectroscopy 8 - Crocoite.com Mineral Locations 9 - EUROmin Project 10 - Franklin Minerals(Dunn) 11 - Franklin Minerals(Palache) 12 -Google Images 13 -Google Scholar 14 -Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 -MinDAT 17 -MinMax(Deutsch) 18 -MinMax(English) 19 - Mineral and Gemstone Kingdom 20 -Mineral of the Month 21 -Mineralienatlas (Deutsch) 22 - Minerals of Wisconsin 23 - Philatelic Mineralogy 24 -QUT Mineral Atlas 25 - Tradeshop.com - The Rainbow of Gems 26 -University of Colorado - Mineral Structure Data 27 - WWW-MINCRYST 28 - YupRocks 29 -theimage 30 -École des Mines de Paris Search for Rhodochrosite using: Visit our Advertisers for Rhodochrosite : Translate Rhodochrosite Mineral Data : Ask about Rhodochrosite here : Print or Cut-and-Paste your Rhodochrosite Specimen Label here :
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