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Spurrite Mineral Data + |
General Spurrite Information |
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| Ca5(SiO4)2(CO3) | |||
| Molecular Weight = 444.57 gm | |||
| Calcium 45.08 % Ca 63.07 % CaO | |||
| Silicon 12.64 % Si 27.03 % SiO2 | |||
| Carbon 2.70 % C 9.90 % CO2 | |||
| Oxygen 39.59 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Ca5(SiO4)2(CO3) | |||
| Contact zone between limestone and diorite. | |||
| Valid Species (Pre-IMA) 1908 | |||
| Velardena mining district, Mexico. Link to MinDat.org Location Data. | |||
| ICSD 25830 | |||
| PDF 13-496 | |||
Spurrite Image | |||
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Spurrite Crystallography |
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| a:b:c =1.5645:1:2.1103 | |||
| a = 10.49, b = 6.705, c = 14.15, Z = 4; beta = 101.317° V = 975.90 Den(Calc)= 3.03 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | |||
| By Intensity(I/Io): 2.701(1), 2.646(0.65), 2.667(0.6), | |||
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Mouse |
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Physical Properties of Spurrite |
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| [100] Distinct | |||
| Gray, Gray white, Lilac gray. | |||
| 3 | |||
| Transparent to translucent | |||
| Cleaveable - Easily cleaved into fragments. | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| 5 - Apatite | |||
| Fluorescent. | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Spurrite |
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| CI meas= -0.058 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.048 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2195,KPDmeas= 0.2217,KC= 0.2096 |
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| Biaxial (-), a=1.64-1.641, b=1.674-1.676, g=1.679-1.681, bire=0.0390-0.0400 | |||
| colorless. | |||
| colorless. | |||
| colorless. | |||
Calculated Properties of Spurrite |
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relectron=3.03 gm/cc |
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| Fermion Index = 0.00699 Boson Index = 0.99301 |
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PESpurrite = 6.04 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Spurrite is Not Radioactive |
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Spurrite Classification |
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| 53.1.1.1 (53)Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations | |||
| (53.1)with (CO3) | |||
| (53.1.1)Dana Group | |||
| VIII/B.22-50 VIII - Silicates | |||
| VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cationes with coordinationnumber between [8] and [12] | |||
| VIII/B.22 - Thaumasite series | |||
Other Spurrite Information |
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| NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | |||
| Links to other databases for Spurrite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Spurrite using: Visit our Advertisers for Spurrite : Translate Spurrite Mineral Data : Ask about Spurrite here : Print or Cut-and-Paste your Spurrite Specimen Label here :
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