| Spadaite Mineral Data |
General Spadaite Information |
|||
| MgSiO2(OH)2·(H2O) (?) | |||
| Molecular Weight = 136.42 gm | |||
| Magnesium 17.82 % Mg 29.54 % MgO | |||
| Silicon 20.59 % Si 44.04 % SiO2 | |||
| Hydrogen 2.96 % H 26.41 % H2O | |||
| Oxygen 58.64 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg(SiO2)(OH)2·(H2O) | |||
| Valid Species (Pre-IMA) 1843 | |||
| Capo di Bove, near Rome, Italy. Link to MinDat.org Location Data. | |||
Spadaite Image | |||
|
|
|
||
Spadaite Crystallography |
|||
| Amorphous- No Crystals | |||
Physical Properties of Spadaite |
|||
| None | |||
| Colorless, Cream, Pinkish. | |||
| 2.2 | |||
| Translucent to subtranslucent | |||
| Amorphous - No crystalline form or imitative shape. | |||
| Massive - Uniformly indistinguishable crystals forming large masses. | |||
| 2.5 - Finger Nail | |||
| Non-fluorescent. | |||
| Vitreous - Dull | |||
| Nonmagnetic | |||
| white | |||
Optical Properties of Spadaite |
|||
| CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC) KPDmeas= 0.2411,KC= 0.2405 |
|||
| Biaxial (+), a=1.521, b=1.525, g=1.545, bire=0.0240 | |||
Calculated Properties of Spadaite |
|||
relectron=2.26 gm/cc |
|||
| Fermion Index = 0.02771 Boson Index = 0.97229 |
|||
PESpadaite = 1.25 barns/electron |
|||
| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Spadaite is Not Radioactive |
|||
Spadaite Classification |
|||
| 78.7.14.1 (78)Unclassified silicates | |||
| (78.7)wholly unclassified silicates | |||
| (78.7.14)Dana Group | |||
| VIII/H.20-30 VIII - Silicates | |||
| VIII/H - Phyllosilicates (layered) Mica like with [Si4O10]4- and related groups | |||
| VIII/H.20 - Hectorite - Zincsilite series | |||
Other Spadaite Information |
|||
| NAME( Ford32) PHYS. PROP.(Dana) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Spadaite : 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 -École des Mines de Paris Search for Spadaite using: Visit our Advertisers for Spadaite : Translate Spadaite Mineral Data : Ask about Spadaite here : Print or Cut-and-Paste your Spadaite Specimen Label here :
|
|||