General Clinotobermorite Information Chemical Formula: |
Ca5Si6(O,OH)18•5(H2O) |
Composition: |
Molecular Weight = 751.00 gm |
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Calcium 26.68 % Ca 37.34 % CaO |
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Silicon 22.44 % Si 48.00 % SiO2 |
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Hydrogen 1.88 % H 16.79 % H2O |
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Oxygen 49.00 % O |
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100.00 % 102.13 % = TOTAL OXIDE |
Empirical Formula: |
Ca5Si6O14(OH)4•5(H2O) |
Environment: |
A vein-forming mineral in gehlenite-spurrite skarns. Low-temperature polymorph of tobermorite. |
IMA Status: |
Approved IMA 1989 |
Locality: |
Fuka, Bitchucho, Okayama Prefecture, Japan. Link to MinDat.org Location Data. |
Name Origin: |
Named as the monoclinic polymorph of tobermorite. |
Synonym: |
ICSD 403090 |
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IMA1990-005 |
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PDF 45-1479 |
| | Clinotobermorite Image
Images:
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Clinotobermorite Crystallography Axial Ratios: |
a:b:c =1.541:1:3.083 |
Cell Dimensions: |
a = 11.331, b = 7.353, c = 22.67, Z = 4; beta = 96.59° V = 1,876.31 Den(Calc)= 2.66 |
Crystal System: |
MonoclinicSpace Group: Cc,C 2/c |
X Ray Diffraction: |
By Intensity(I/Io): 11.25(1), 2.794(0.6), 3.034(0.6), |
Crystal Structure:
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Mouse
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| Physical Properties of Clinotobermorite Cleavage: |
{001} Perfect, {100} Poor |
Color: |
Colorless, White. |
Density: |
2.58 |
Diaphaneity: |
Transparent |
Habit: |
Acicular - Occurs as needle-like crystals. |
Habit: |
Platy - Sheet forms (e.g. micas). |
Habit: |
Tabular - Form dimensions are thin in one direction. |
Hardness: |
4.5 - Between Fluorite and Apatite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
| Optical Properties of Clinotobermorite Gladstone-Dale: |
CI meas= 0.045 (Good) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.074 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.218,KPDmeas= 0.2248,KC= 0.2353 Ncalc = 1.61 - 1.63 Optical Data: |
Biaxial (+/-), a=1.575, b=1.58, g=1.585, bire=0.0100, 2V(Calc)=88, 2V(Meas)=89.8. |
Pleochroism (x): |
colorless. |
Pleochroism (y): |
colorless. |
Pleochroism (z): |
colorless. |
| Calculated Properties of Clinotobermorite Electron Density: |
Bulk Density (Electron Density)=2.62 gm/cc |
note: Specific Gravity of Clinotobermorite =2.58 gm/cc. Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEClinotobermorite = 4.11 barns/electron |
U=PEClinotobermorite x rElectron Density= 10.78 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Clinotobermorite is Not Radioactive | Clinotobermorite Classification Dana Class: |
72.03.02.02 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings |
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(72.03)with 3-, 4-, or 5-membered rings and 8-membered rings |
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(72.03.02)Tobermorite group (5- & 8-membered rings) |
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Strunz Class: |
09.DG.10 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DG -Inosilicates with 3-periodic single and multiple chains |
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| Other Clinotobermorite Information References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Clinotobermorite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Clinotobermorite using: Visit our Advertisers for Clinotobermorite : A Bijoux Google Search for ClinotobermoriteAdam's Minerals Google Search for Clinotobermorite Cape Minerals Google Search for Clinotobermorite Dakota Matrix Minerals Google Search for Clinotobermorite Excalibur Mineral Corp. Google Search for Clinotobermorite Exceptional Minerals Google Search for Clinotobermorite John Betts Fine Minerals Search for Clinotobermorite McDougall Minerals Google Search for Clinotobermorite Mineral News Website Link Rock and Mineral Shows Google Search for Clinotobermorite Weinrich Minerals, Inc. Google Search for Clinotobermorite Ask about Clinotobermorite here : Print or Cut-and-Paste your Clinotobermorite Specimen Label here :
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