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Chondrodite Mineral Data + |
General Chondrodite Information |
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| (Mg,Fe++)5(SiO4)2(F,OH)2 | |||
| Molecular Weight = 382.12 gm | |||
| Magnesium 23.85 % Mg 39.55 % MgO | |||
| Iron 18.27 % Fe 23.50 % FeO | |||
| Silicon 14.70 % Si 31.45 % SiO2 | |||
| Hydrogen 0.13 % H 1.18 % H2O | |||
| Oxygen 35.59 % O | |||
| Fluorine 7.46 % F 7.46 % F | |||
| - % F -3.14 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg3.75Fe2+1.25(SiO4)2F1.5(OH)0.5 | |||
| Contact metamorphic rocks. | |||
| Valid Species (Pre-IMA) 1817 | |||
| Wunsiedel and Passau, Germany. Link to MinDat.org Location Data. | |||
| From the Greek chondros - "grain." | |||
| ICSD 15180 | |||
| PDF 12-527 | |||
Chondrodite Image | |||
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Chondrodite Crystallography |
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| a:b:c =1.6638:1:2.1712 | |||
| a = 7.87, b = 4.73, c = 10.27, Z = 2; beta = 109.033° V = 361.40 Den(Calc)= 3.51 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | |||
| By Intensity(I/Io): 2.252(1), 2.272(1), 1.737(0.95), | |||
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Mouse |
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Physical Properties of Chondrodite |
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| [100] Good | |||
| Yellow, Orange, Brownish white, Reddish white, Greenish white. | |||
| 3.1 - 3.2, Average = 3.15 | |||
| Transparent to translucent | |||
| Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | |||
| Crystalline - Fine - Occurs as well-formed fine sized crystals. | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| 6-6.5 - Orthoclase-Pyrite | |||
| Non-fluorescent. | |||
| Vitreous - Greasy | |||
| gray | |||
Optical Properties of Chondrodite |
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| CI meas= -0.021 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.084 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1798,KPDmeas= 0.2003,KC= 0.1962 |
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| Biaxial (+), a=1.592-1.643, b=1.602-1.655, g=1.619-1.675, bire=0.0270-0.0320, 2V(Calc)=76-78, 2V(Meas)=64-90. Dispersion weak to moderate, r > v. | |||
| yellowish brown, deep chrome yellow, reddish brown, or brownish yellow. | |||
| pale yellowish brown, yellow, pale reddish brown, or yellowish green. | |||
| colorless, light yellow, pale brown, or pale green. | |||
Calculated Properties of Chondrodite |
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relectron=3.09 gm/cc |
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| Fermion Index = 0.03476 Boson Index = 0.96524 |
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PEChondrodite = 6.55 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chondrodite is Not Radioactive |
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Chondrodite Classification |
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| 52.3.2b.2 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O | |||
| (52.3)with cations in [6] coordination only | |||
| (52.3.2b)Humite group (Chondrodite series) | |||
| VIII/B.04-20 VIII - Silicates | |||
| VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6] | |||
| VIII/B.04 - Humite group | |||
Other Chondrodite Information |
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| NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | |||
| Links to other databases for Chondrodite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - Franklin Minerals(Dunn) 7 - Franklin Minerals(Palache) 8 - Google Images 9 - Google Scholar 10 - Handbook of Mineralogy (MinSocAm) 11 - Handbook of Mineralogy (UofA) 12 - HyperPhysics 13 - MinDAT 14 - MinMax(Deutsch) 15 - MinMax(English) 16 - Mineralienatlas (Deutsch) 17 - QUT Mineral Atlas 18 - Ruff.Info 19 - Scandinavian mineral gallery 20 - University of Colorado - Mineral Structure Data 21 - WWW-MINCRYST Search for Chondrodite using: Visit our Advertisers for Chondrodite : 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 Chondrodite Mineral Data : Ask about Chondrodite here : Print or Cut-and-Paste your Chondrodite Specimen Label here :
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