[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts] See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM] Mineral News was founded some twenty years ago and has developed a following of avid mineral collectors seeking timely information about new finds and other items of interest to the collector community. Articles are solicited from collector and scientific authors. General Dusmatovite InformationK(K,Na,[ ])(Mn++,Y,Zr)2(Zn,Li)3Si12O30 |
Molecular Weight = 1,176.31 gm |
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Potassium 5.32 % K 6.41 % K2O |
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Sodium 0.59 % Na 0.79 % Na2O |
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Lithium 0.44 % Li 0.95 % Li2O |
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Yttrium 4.53 % Y 5.76 % Y2O3 |
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Zirconium 1.55 % Zr 2.10 % ZrO2 |
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Manganese 5.60 % Mn 8.05 % Mn2O3 |
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Zinc 12.51 % Zn 15.57 % ZnO |
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Silicon 28.65 % Si 61.29 % SiO2 |
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Oxygen 40.80 % O |
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______ ______ |
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100.00 % 100.92 % = TOTAL OXIDE |
K1.6Na0.3Mn3+1.2Y0.6Zr0.2Zn2.25Li0.75Si12O30 |
In a pegmatite boulder in a glacial moraine. |
Approved IMA 1995 |
The Dara-i-Pioz alkaline massif, Tien Shan, Tajikistan. Link to MinDat.org Location Data. |
For Vyacheslav Djuraevitch Dusmatov (1936-), Mineralogist and geologist who has done much work at the locality. |
Dusmatovite + Pronunciation |
IMA1994-010 |
| | Dusmatovite Image
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Dusmatovite Crystallographya:c = 1:1.3987 |
a = 10.218, c = 14.292, Z = 2; V = 1,292.28 Den(Calc)= 3.02 |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc |
By Intensity(I/Io): 3.25(1), 2.548(0.52), 3.75(0.5),4.15(0.45), |
| Physical Properties of DusmatoviteNone |
Blue, Dirty blue, Violet brown. |
2.96 |
Translucent |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
Aggregates - Made of numerous individual crystals or clusters. |
4.5 - Between Fluorite and Apatite |
Vitreous (Glassy) |
pale blue |
| Optical Properties of DusmatoviteCI meas= 0.043 (Good) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.062 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1947,KPDmeas= 0.1986,KC= 0.2075 Ncalc = 1.61 - 1.63 Uniaxial (-), e=1.586, w=1.59, bire=0.0040. |
| Calculated Properties of DusmatoviteBulk Density (Electron Density)=2.88 gm/cc |
note: Specific Gravity of Dusmatovite =2.96 gm/cc. Fermion Index = 0.02 |
Boson Index = 0.98 PEDusmatovite = 16.74 barns/electron |
U=PEDusmatovite x relectron= 48.26 barns/cc. |
GRapi = 74.72 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Dusmatovite | Dusmatovite Classification63.02.01a.11 (63)Cyclosilicate Condensed Rings |
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(63.02)6-membered rings |
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(63.02.01a)Milarite - Osumilite group (Milarite - Osumilite subgroup) |
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09.CM.05 09 - SILICATES (Germanates) |
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09.C - Cyclosilicates |
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09.CM -[Si6O18]12- 6-membered double rings (sechser-Doppelringe) |
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| Other Dusmatovite InformationNAME( MinRec, Vol 28, No 3) PHYS. PROP.(Am.Min.,Vol.82,p430,1997) OPTIC PROP.(MinRec, Vol 28, No 3) |
Links to other databases for Dusmatovite : |
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 10 - Ruff.Info 11 - WWW-MINCRYST Search for Dusmatovite using: Visit our Advertisers for Dusmatovite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Dusmatovite Mineral Data : Ask about Dusmatovite here : Print or Cut-and-Paste your Dusmatovite Specimen Label here :
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