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Tuscanite Mineral Data + |
General Tuscanite Information |
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| K(Ca,Na)6(Si,Al)10O22(SO4,CO3,(OH)2)·(H2O) | |||
| Molecular Weight = 1,101.39 gm | |||
| Potassium 3.19 % K 3.85 % K2O | |||
| Sodium 1.04 % Na 1.41 % Na2O | |||
| Calcium 19.29 % Ca 26.99 % CaO | |||
| Magnesium 0.22 % Mg 0.37 % MgO | |||
| Aluminum 9.06 % Al 17.13 % Al2O3 | |||
| Iron 0.51 % Fe 0.65 % FeO | |||
| Silicon 16.07 % Si 34.37 % SiO2 | |||
| Hydrogen 0.27 % H 2.45 % H2O | |||
| Carbon 0.65 % C 2.40 % CO2 | |||
| Sulfur 4.08 % S 10.18 % SO3 | |||
| Oxygen 45.61 % O | |||
| ______ ______ | |||
| 100.00 % 99.78 % = TOTAL OXIDE | |||
| K0.9Ca5.3Na0.5Mg0.1Fe2+0.1Si6.3Al3.7O22(SO4)1.4(CO3)0.6(OH)·(H2O) | |||
| Within ejected blocks of metasomatized carbonate rocks in a pumice deposit. | |||
| Approved IMA 1977 | |||
| Latera caldera, Pitigliano, near Grosseto, Tuscan, and at Sacrofano, Lazio, Italy. Link to MinDat.org Location Data. | |||
| Named for the Tuscany region of Italy where the mineral was first found. | |||
| ICSD 9683 | |||
| PDF 29-1035 | |||
Tuscanite Image | |||
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Tuscanite Crystallography |
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| a:b:c =4.7037:1:2.1307 | |||
| a = 24.036, b = 5.11, c = 10.888, Z = 2; beta = 106.95° V = 1,279.21 Den(Calc)= 2.86 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | |||
| By Intensity(I/Io): 2.872(1), 11.51(1), 3.065(0.47), | |||
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Mouse |
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Physical Properties of Tuscanite |
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| [100] Distinct | |||
| Colorless. | |||
| 2.83 | |||
| Transparent | |||
| Platy - Sheet forms (e.g. micas). | |||
| 5.5-6 - Knife Blade-Orthoclase | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Tuscanite |
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| CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2054,KPDmeas= 0.2075,KC= 0.2072 |
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| Biaxial (-), a=1.581, b=1.59, g=1.591, bire=0.0100, 2V(Calc)=36, 2V(Meas)=40. | |||
Calculated Properties of Tuscanite |
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relectron=2.82 gm/cc |
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| Fermion Index = 0.00869 Boson Index = 0.99131 |
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PETuscanite = 4.00 barns/electron |
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| GRapi = 45.95 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Tuscanite |
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Tuscanite Classification |
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| 73.1.2.2 (73)Phyllosilicate Condensed Tetrahedral Sheets | |||
| (73.1)with double layers | |||
| (73.1.2)Latiumite group | |||
| VIII/H.06-20 VIII - Silicates | |||
| VIII/H - Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others | |||
| VIII/H.06 - Latiumite - Tuscanite series | |||
Other Tuscanite Information |
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| NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Tuscanite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Tuscanite using: Visit our Advertisers for Tuscanite : Translate Tuscanite Mineral Data : Ask about Tuscanite here : Print or Cut-and-Paste your Tuscanite Specimen Label here :
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