| Maleevite Mineral Data |
General Maleevite Information |
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| BaB2Si2O8 | |||
| Molecular Weight = 341.91 gm | |||
| Barium 39.76 % Ba 44.40 % BaO | |||
| Silicon 16.51 % Si 35.32 % SiO2 | |||
| Boron 6.29 % B 20.26 % B2O3 | |||
| Oxygen 37.44 % O | |||
| ______ ______ | |||
| 100.00 % 99.98 % = TOTAL OXIDE | |||
| Ba0.99B1.99Si2.01O8 | |||
| Found in a large boulder of pegmatite intruding syenite. Ba-dominant analogue of danburite; structure determined. | |||
| Approved IMA 2004 (Dana # Added) | |||
| Moraine of the Dara-i-Pioz glacier, Alai range, Tien Shan, northern Tajikistan. Link to MinDat.org Location Data. | |||
| Named for Mihail Naidenovitch Maleev (1940-), Bulgarian mineralogist and expert in mineral systematics. | |||
| IMA2002-027 | |||
Maleevite Image | |||
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Maleevite Crystallography |
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| a:b:c =0.9957:1:1.1054 | |||
| a = 8.141, b = 8.176, c = 9.038, Z = 4; V = 601.58 Den(Calc)= 3.77 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma | |||
| By Intensity(I/Io): 3.62(1)(210), 2.021(0.7)(033), 3.39(0.6)(121),6.07(0.6)(011), 2.83(0.5)(013), 2.481(0.4)(131), 4.86(0.3)(111), | |||
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Mouse |
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Physical Properties of Maleevite |
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| None | |||
| White. | |||
| 3.78 | |||
| Transparent | |||
| Brittle - Uneven - Very brittle fracture producing uneven fragments. | |||
| Blocky - Crystal shape tends to be equant (e.g. feldspars). | |||
| Euhedral Crystals - Occurs as well-formed crystals showing good external form. | |||
| 7 - Quartz | |||
| Vitreous - Greasy | |||
| white | |||
Optical Properties of Maleevite |
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| CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1734,KPDmeas= 0.1729,KC= 0.1739 |
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| Biaxial (-), a=1.649, b=1.656, g=1.656, bire=0.0070 | |||
Calculated Properties of Maleevite |
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relectron=3.47 gm/cc |
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| Fermion Index = 0.09127 Boson Index = 0.90873 |
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PEMaleevite = 173.72 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Maleevite is Not Radioactive |
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Maleevite Classification |
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| 56.3.1.2 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O | |||
| (56.3)with [Si2O7] with borate groups | |||
| (56.3.1)Danburite Goup | |||
| VIII/J.08-40 VIII - Silicates | |||
| VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders | |||
| VIII/J.08 - Reedmergnerite - Danburite series | |||
Other Maleevite Information |
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| NAME( CanMin, v 42, p 107) PHYS. PROP.(CanMin, v 42, p 107) OPTIC PROP.(CanMin, v 42, p 107) | |||
| Links to other databases for Maleevite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Maleevite using: Visit our Advertisers for Maleevite : Translate Maleevite Mineral Data : Ask about Maleevite here : Print or Cut-and-Paste your Maleevite Specimen Label here :
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