Kilchoanite Mineral Data + 
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- 58.3.2.1 Kilchoanite Ca3Si2O7 I2cm mm2
- VIII/C.03-10 Rankinite Ca3Si2O7 P 21/a 2/m
- VIII/C.03-20 Kilchoanite Ca3Si2O7 I2cm mm2
- VIII/C.03-30 Cebollite Ca5Al2(SiO4)3(OH)4 Unk Ortho
- VIII/C.03-58 Manganokukisvumite! Na6MnTi4Si8O28·4(H2O) Pccn 2/m 2/m 2/m
General Kilchoanite Information |
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 Chemical Formula: |
Ca3Si2O7 | ||
| Composition: |
Molecular Weight = 288.40 gm | ||
| Calcium 41.69 % Ca 58.33 % CaO | |||
| Silicon 19.48 % Si 41.67 % SiO2 | |||
| Oxygen 38.83 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ca3(Si2O7) | ||
| Environment: |
Retrograde replacement of rankinite. | ||
| IMA Status: |
Approved IMA 1961 | ||
| Locality: |
Kilchoan, Ardnamurchan, Scotland. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Synonym: |
ICSD 63499 | ||
| PDF 29-370 | |||
Search for Kilchoanite Images | |||
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Images:
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Kilchoanite Crystallography |
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| Axial Ratios: |
a:b:c =2.2436:1:4.3123 | ||
| Cell Dimensions: |
a = 11.42, b = 5.09, c = 21.95, Z = 8; V = 1,275.91 Den(Calc)= 3.00 | ||
| Crystal System: |
Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: I2cm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.89(1), 2.68(0.95), 3.07(0.9), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Kilchoanite |
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| Cleavage: |
None | ||
| Color: |
Colorless. | ||
| Density: |
2.99 | ||
| Diaphaniety: |
Transparent | ||
| Streak: |
white | ||
Optical Properties of Kilchoanite |
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| Gladstone-Dale: |
CI meas= -0.037 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.034 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2162,KPDmeas= 0.2169,KC= 0.2092 |
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| Optical Data: |
Biaxial (+), a=1.647, b=1.649, g=1.65, bire=0.0030, 2V(Calc)=70, 2V(Meas)=60. Dispersion r > v. | ||
| Pleochroism (x): |
anomalous. | ||
| Pleochroism (y): |
anomalous. | ||
| Pleochroism (z): |
anomalous. | ||
Calculated Properties of Kilchoanite |
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| Electron Density: |
relectron=3.00 gm/cc |
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| Fermion Index |
Fermion Index = 0.00984 Boson Index = 0.99016 |
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| Photoelectric: |
PEKilchoanite = 5.85 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kilchoanite is Not Radioactive |
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Kilchoanite Classification |
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| Dana Class: |
58.3.2.1 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups | ||
| (58.3)with insular single and triple groups (n=1,3) | |||
| (58.3.2)Dana Group | |||
| Strunz Class: |
VIII/C.03-20 VIII - Silicates | ||
| VIII/C - Sorosilicates, with [Si2O7]6-, without anions unfamiliar to tetraheders | |||
| VIII/C.03 - Rankinite - Cebollite series | |||
Other Kilchoanite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Kilchoanite : 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 Kilchoanite using: Visit our Advertisers for Kilchoanite : Translate Kilchoanite Mineral Data : Ask about Kilchoanite here : Print or Cut-and-Paste your Kilchoanite Specimen Label here :
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