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Mangazeite Mineral Data
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General Mangazeite Information
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 Chemical Formula: |
Al2(SO4)(OH)4•3H2O |
| Composition: |
Molecular Weight = 278.44 gm |
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Aluminum 19.28 % Al 36.44 % Al2O3 |
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Hydrogen 3.87 % H 34.55 % H2O |
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Sulfur 11.63 % S 29.04 % SO3 |
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Oxygen 65.22 % O |
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______ ______ |
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100.00 % 100.03 % = TOTAL OXIDE |
| Empirical Formula: |
Al1.99(SO4)1.01(OH)3.94•3.37(H2O) |
| Environment: |
Found as a supergene mineral in fractured, sericitized, and pyritized granodiorite adjacent to a quartz-arsenopyrite vein. Aluminite group. |
| IMA Status: |
Approved IMA 2005 (Dana # Added) |
| Locality: |
Mangazeiskoye silver ore deposit, Eastern Yakutia, Siberia, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Synonym: |
IMA2005-021a |
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Mangazeite Crystallography
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| Axial Ratios: |
a:b:c =0.8828:1:1.2093 |
| Cell Dimensions: |
a = 8.286, b = 9.385, c = 11.35, Z = 4; alpha = 96.1°, beta = 98.9°, gamma = 96.6° V = 861.31 Den(Calc)= 2.15 |
| Crystal System: |
Triclinic Space Group: P1 or P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 4.258(1), 7.59(0.49), 4.06(0.48),7.16(0.46), 3.921(0.43), 8.14(0.19), 4.52(0.13), 3.795(0.12), |
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Physical Properties of Mangazeite
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| Color: |
White, Colorless. |
| Diaphaneity: |
Transparent |
| Habit: |
Fibrous - Crystals made up of fibers. |
| Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
| Hardness: |
1 - Talc |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Mangazeite
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| Gladstone-Dale: |
CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2488,KC= 0.2443
Ncalc = 1.53 |
| Optical Data: |
Biaxial (?), a=1.525, g=1.545, bire=0.0200 |
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Calculated Properties of Mangazeite
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| Electron Density: |
Bulk Density (Electron Density)=2.22 gm/cc
note: Specific Gravity of Mangazeite =2.15 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0011912149
Boson Index = 0.9988087851 |
| Photoelectric: |
PEMangazeite = 1.35 barns/electron
U=PEMangazeite x rElectron Density= 3.00 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mangazeite is Not Radioactive |
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Mangazeite Classification
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| Dana Class: |
31.07.04.02 (31)Hydrated Sulfates Containing Hydroxyl or Halogen |
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(31.07)where (A+ B++)2 (XO4) Zq�x(H2O) |
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(31.07.04)Dana Group |
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31.07.04.01 Aluminite Al2(SO4)(OH)4•7(H2O) P 21/c 2/m |
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31.07.04.02 Mangazeite! Al2(SO4)(OH)4•3H2O P1 or P1 Tri |
| Strunz Class: |
07.DE.05 07 - SULFATES (SELENATES, TELLURATES) |
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07.D - Sulfates (selenates, etc.) with additional anions, with H2O |
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07.DE -With only medium-sized cations; unclassified |
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07.DE.05 Mangazeite! Al2(SO4)(OH)4•3H2O P1 or P1 Tri |
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Other Mangazeite Information
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| References: |
NAME( Geology of Ore Deposits, v49:514) PHYS. PROP.(Geology of Ore Deposits, v49:514) OPTIC PROP.(Geology of Ore Deposits, v49:514) |
| See Also: |
Links to other databases for Mangazeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Mangazeite Specimen Label here :
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Mangazeite
Al2(SO4)(OH)4•3H2O
Dana No: 31.07.04.02 Strunz No: 07.DE.05
Locality:
Notes:
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