|
Augite Mineral Data + |
General Augite Information |
|||
| (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 | |||
| Molecular Weight = 236.35 gm | |||
| Sodium 0.97 % Na 1.31 % Na2O | |||
| Calcium 15.26 % Ca 21.35 % CaO | |||
| Magnesium 9.26 % Mg 15.35 % MgO | |||
| Titanium 2.03 % Ti 3.38 % TiO2 | |||
| Aluminum 4.57 % Al 8.63 % Al2O3 | |||
| Iron 4.73 % Fe 6.08 % FeO | |||
| Silicon 22.58 % Si 48.30 % SiO2 | |||
| Oxygen 40.62 % O | |||
| ______ ______ | |||
| 100.00 % 104.40 % = TOTAL OXIDE | |||
| Ca0.9Na0.1Mg0.9Fe2+0.2Al0.4Ti0.1Si1.9O6 | |||
| Basic igneous and metamorphic rocks. | |||
| Valid Species (Pre-IMA) 1792 | |||
| Common world wide. Link to MinDat.org Location Data. | |||
| From the Greek auge - "luster." | |||
| Fassaite | |||
| ICSD 9257 | |||
| PDF 24-203 | |||
Augite Image | |||
|
|
|
||
|
|
|
||
|
|
|
||
Augite Crystallography |
|||
| a:b:c =1.0888:1:0.5833 | |||
| a = 9.8, b = 9, c = 5.25, Z = 4; beta = 105° V = 447.27 Den(Calc)= 3.51 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c | |||
| By Intensity(I/Io): 1.43(1), 1.62(1), 2.99(1), | |||
Mouse |
|
||
|
Mouse |
| ||
Physical Properties of Augite |
|||
| [110] Perfect, [010] Indistinct | |||
| Brown green, Green, Light brown, Dark brown, Black. | |||
| 3.2 - 3.6, Average = 3.4 | |||
| Translucent to opaque | |||
| Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | |||
| Columnar - Forms columns | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| Massive - Fibrous - Distinctly fibrous fine-grained forms. | |||
| 5-6.5 | |||
| Non-fluorescent. | |||
| Vitreous - Resinous | |||
| greenish gray | |||
Optical Properties of Augite |
|||
| CI meas= 0.066 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.095 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2,KPDmeas= 0.2065,KC= 0.2211 |
|||
| Biaxial (+), a=1.68-1.703, b=1.684-1.711, g=1.706-1.729, bire=0.0260, 2V(Calc)=48-68, 2V(Meas)=40-52. Dispersion weak to distinct, r > v. | |||
| pale green, pale brownish green, pale bluish green, bluish green, or pale purple brown. | |||
| pale brownish green, pale greenish brown, pink, or yellowish green. | |||
| pale green, pale brownish green, pale bluish green, yellowish green, or pale purple brown. | |||
Calculated Properties of Augite |
|||
relectron=3.37 gm/cc |
|||
| Fermion Index = 0.02382 Boson Index = 0.97618 |
|||
PEAugite = 4.80 barns/electron |
|||
| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Augite is Not Radioactive |
|||
Augite Classification |
|||
| 65.1.3a.3 (65)Inosilicate Single-Width Unbranched Chains, W=1 | |||
| (65.1)with chains P=2 | |||
| (65.1.3a)C2/c clinopyroxenes (Ca clinopyroxenes) | |||
| VIII/F.01-90 VIII - Silicates | |||
| VIII/F - Inosilicates (chain and band) double chains [Si2O6]4- | |||
| VIII/F.01 - Pyroxene group, Clinopyroxene | |||
Other Augite Information |
|||
| NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | |||
| Links to other databases for Augite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Athena 6 - CalTech Mineral Spectroscopy 7 - EUROmin Project 8 - Ecole des Mines de Paris 9 - Franklin Minerals(Dunn) 10 - Glendale Community College 11 - Google Images 12 - Google Scholar 13 - Handbook of Mineralogy (MinSocAm) 14 - Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 - MinDAT 17 - MinMax(Deutsch) 18 - MinMax(English) 19 - Mineral and Gemstone Kingdom 20 - Mineralienatlas (Deutsch) 21 - Minerals in Thin Section-University of North Carolina 22 - QUT Mineral Atlas 23 - Ruff.Info 24 - UCLA - Petrography Thin-Sections 25 - WWW-MINCRYST 26 - theimage Search for Augite using: Visit our Advertisers for Augite : 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 Augite Mineral Data : Ask about Augite here : Print or Cut-and-Paste your Augite Specimen Label here :
|
|||