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Andesine Mineral Data + |
General Andesine Information |
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| (Na,Ca)(Si,Al)4O8 | |||
| Molecular Weight = 268.62 gm | |||
| Sodium 5.14 % Na 6.92 % Na2O | |||
| Calcium 5.97 % Ca 8.35 % CaO | |||
| Aluminum 14.06 % Al 26.57 % Al2O3 | |||
| Silicon 27.18 % Si 58.16 % SiO2 | |||
| Oxygen 47.65 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Na0.6Ca0.4Al1.4Si2.6O8 | |||
| Magmatic and metamorphic rocks. | |||
| Not Approved IMA 1841 | |||
| Andes Mountains, South America. Link to MinDat.org Location Data. | |||
| Named after its locality. | |||
| Ab60 | |||
| An40 | |||
Andesine Image | |||
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Andesine Crystallography |
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| a:b:c =0.6321:1:0.71 | |||
| a = 8.155, b = 12.9, c = 9.16, Z = 6; alpha = 93.917°, beta = 116.3333°, gamma = 89.166° V = 861.52 Den(Calc)= 3.11 | |||
| Triclinic - PinacoidalH-M Symbol ( 1) Space Group: C1 | |||
| By Intensity(I/Io): 3.21(1), 3.18(0.9), 4.04(0.8), | |||
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Physical Properties of Andesine |
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| [001] Perfect, [010] Good | |||
| Colorless, Gray, Yellow green, White. | |||
| 2.66 - 2.68, Average = 2.67 | |||
| Transparent to Subtransparent to translucent | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Crystalline - Coarse - Occurs as well-formed coarse sized crystals. | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| 7 - Quartz | |||
| Non-fluorescent. | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Andesine |
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| CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.14 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1777,KPDmeas= 0.207,KC= 0.2067 |
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| Biaxial (+/-), a=1.543-1.554, b=1.5469-1.5587, g=1.552-1.562, bire=0.0080-0.0090, 2V(Calc)=78-84, 2V(Meas)=76-83. Dispersion none. | |||
| colorless. | |||
| colorless. | |||
| colorless. | |||
Calculated Properties of Andesine |
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relectron=2.65 gm/cc |
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| Fermion Index = 0.013 Boson Index = 0.987 |
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PEAndesine = 2.27 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Andesine is Not Radioactive |
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Andesine Classification |
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| 76.1.3.3 (76)Tectosilicate Al-Si Framework | |||
| (76.1)with Al-Si frameworks | |||
| (76.1.3)Plagioclase series | |||
| VIII/J.07-40 VIII - Silicates | |||
| VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders | |||
| VIII/J.07 - Feldspar group, Anorthoclase - Anorthite - Banalcite series | |||
Other Andesine Information |
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| NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | |||
| Links to other databases for Andesine : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Athena 6 - EUROmin Project 7 - Ecole des Mines de Paris 8 - Google Images 9 - Google Scholar 10 - Handbook of Mineralogy (MinSocAm) 11 - Handbook of Mineralogy (UofA) 12 - MinDAT 13 - MinMax(Deutsch) 14 - MinMax(English) 15 - Mineral and Gemstone Kingdom 16 - Mineralienatlas (Deutsch) 17 - QUT Mineral Atlas 18 - Ruff.Info 19 - Scandinavian mineral gallery 20 - WWW-MINCRYST Search for Andesine using: Visit our Advertisers for Andesine : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Andesine Mineral Data : Ask about Andesine here : Print or Cut-and-Paste your Andesine Specimen Label here :
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