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Mendozite Mineral Data |
General Mendozite Information |
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NaAl(SO4)2•11(H2O) | ||
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Molecular Weight = 440.27 gm | ||
Sodium 5.22 % Na 7.04 % Na2O | |||
Aluminum 6.13 % Al 11.58 % Al2O3 | |||
Hydrogen 5.04 % H 45.01 % H2O | |||
Sulfur 14.57 % S 36.37 % SO3 | |||
Oxygen 69.05 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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NaAl(SO4)2•11(H2O) | ||
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Oxidation of pyrite in reaction with clays, | ||
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Valid Species (Pre-IMA) 1868 | ||
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"San Juan, near Mendoza" [probably meaning Mendoza Province; the original occurrence appears lost.], Argintina. Link to MinDat.org Location Data. | ||
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Named for the locality. | ||
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Mendozite + Pronunciation ![]() |
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ICSD 26005 | ||
PDF 22+475 | |||
Mendozite Image | |||
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Mendozite Crystallography |
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a:b:c =2.388:1:0.911 | ||
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a = 21.75, b = 9.108, c = 8.298, Z = 4; beta = 92.47° V = 1,642.30 Den(Calc)= 1.78 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c | ||
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By Intensity(I/Io): 3.5(1), 4.76(0.85), 4.58(0.65), | ||
Physical Properties of Mendozite |
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{100} Good, {001} Indistinct, {010} Indistinct | ||
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Colorless, White. | ||
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1.73 - 1.765, Average = 1.74 | ||
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Transparent to Translucent | ||
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3 - Calcite | ||
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Vitreous (Glassy) | ||
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white | ||
Optical Properties of Mendozite |
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CI meas= -0.028 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2571,KPDmeas= 0.2619,KC= 0.2548 Ncalc = 1.44 - 1.45 |
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Biaxial (-), a=1.449, b=1.461, g=1.463, bire=0.0140, 2V(Calc)=44, 2V(Meas)=56. | ||
Calculated Properties of Mendozite |
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Bulk Density (Electron Density)=1.86 gm/cc note: Specific Gravity of Mendozite =1.78 gm/cc. |
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Fermion Index = 0.0014314753 Boson Index = 0.9985685247 |
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PEMendozite = 1.26 barns/electron U=PEMendozite x rElectron Density= 2.34 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mendozite is Not Radioactive |
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Mendozite Classification |
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29.05.04.01 (29)Hydrated Acid and Sulfates | ||
(29.05)where A B (XO4)2 � x(H2O) | |||
(29.05.04)Dana Group | |||
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07.CC.15 07 - SULFATES (SELENATES, TELLURATES) | ||
07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O | |||
07.CC -With medium-sized and large cations | |||
Other Mendozite Information |
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NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
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Links to other databases for Mendozite : 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 Mendozite using: Visit our Advertisers for Mendozite : Ask about Mendozite here : Print or Cut-and-Paste your Mendozite Specimen Label here :
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