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General Peretaite Information |
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 Chemical Formula: |
CaSb+++4O4(OH)2(SO4)2•2(H2O) | ||
| Composition: |
Molecular Weight = 853.25 gm | ||
| Calcium 4.70 % Ca 6.57 % CaO | |||
| Antimony 57.08 % Sb 68.33 % Sb2O3 | |||
| Hydrogen 0.71 % H 6.33 % H2O | |||
| Sulfur 7.52 % S 18.77 % SO3 | |||
| Oxygen 30.00 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
CaSb4O4(OH)2(SO4)2•2(H2O) | ||
| Environment: |
Secondary mineral in vugs in an antimony-bearing vein in silicified limestone. | ||
| IMA Status: |
Approved IMA 1980 | ||
| Locality: |
Pereta, Tuscany, Italy. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Name Pronunciation: |
Peretaite + Pronunciation  |
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| Synonym: |
ICSD 100339 | ||
| PDF 33-264 | |||
Peretaite Image | |||
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Images:
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Peretaite Crystallography |
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| Axial Ratios: |
a:b:c =4.4017:1:1.8185 | ||
| Cell Dimensions: |
a = 24.641, b = 5.598, c = 10.18, Z = 4; beta = 95.95° V = 1,396.67 Den(Calc)= 4.06 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 12.19(1), 3.06(0.67), 2.451(0.31), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Peretaite |
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| Cleavage: |
{100} Perfect | ||
| Color: |
Colorless, White. | ||
| Density: |
4.06 | ||
| Diaphaneity: |
Transparent | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Hardness: |
3.5-4 - Copper Penny-Fluorite | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Peretaite |
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| Gladstone-Dale: |
CI meas= 0.001 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.001 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2071,KPDmeas= 0.2071,KC= 0.2073 Ncalc = 1.84 |
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| Optical Data: |
Biaxial (+), b=1.841 | ||
Calculated Properties of Peretaite |
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| Electron Density: |
Bulk Density (Electron Density)=3.71 gm/cc note: Specific Gravity of Peretaite =4.06 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0007721997 Boson Index = 0.9992278003 |
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| Photoelectric: |
PEPeretaite = 184.76 barns/electron U=PEPeretaite x rElectron Density= 685.73 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Peretaite is Not Radioactive |
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Peretaite Classification |
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| Dana Class: |
31.06.04.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen | ||
| (31.06)where (A+ B++)5 (XO4)2 Zq·x(H2O) | |||
| (31.06.04)Dana Group | |||
| Strunz Class: |
07.DF.45 07 - SULFATES (SELENATES, TELLURATES) | ||
| 07.D - Sulfates (selenates, etc.) with additional anions, with H2O | |||
| 07.DF -With large and medium-sized cations | |||
Other Peretaite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Peretaite : 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 Peretaite using: Visit our Advertisers for Peretaite : A Bijoux Google Search for PeretaiteAdam's Minerals Google Search for Peretaite Cape Minerals Google Search for Peretaite Dakota Matrix Minerals Google Search for Peretaite Excalibur Mineral Corp. Google Search for Peretaite Exceptional Minerals Google Search for Peretaite John Betts Fine Minerals Search for Peretaite McDougall Minerals Google Search for Peretaite Mineral News Website Link Rock and Mineral Shows Google Search for Peretaite Weinrich Minerals, Inc. Google Search for Peretaite Ask about Peretaite here : Print or Cut-and-Paste your Peretaite Specimen Label here :
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