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Makatite Mineral Data + |
General Makatite Information |
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| Na2Si4O8(OH)2·4(H2O) | |||
| Molecular Weight = 392.39 gm | |||
| Sodium 11.72 % Na 15.80 % Na2O | |||
| Silicon 28.63 % Si 61.25 % SiO2 | |||
| Hydrogen 2.57 % H 22.96 % H2O | |||
| Oxygen 57.08 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Na2Si4O8(OH)2·4(H2O) | |||
| Continental evaporite deposits. Forms pseudomorphs after trona. | |||
| Approved IMA 1970 | |||
| Lake Magadi, Kenya. Link to MinDat.org Location Data. | |||
| Named from the Masai "emakat," soda, in allusion to the high sodium content. | |||
| ICSD 17057 | |||
| PDF 23-703 | |||
Makatite Image | |||
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Makatite Crystallography |
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| a:b:c =0.4083:1:0.5263 | |||
| a = 7.3881, b = 18.094, c = 9.5234, Z = 4; beta = 90.64° V = 1,273.01 Den(Calc)= 2.05 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | |||
| By Intensity(I/Io): 5.09(1), 2.97(0.57), 9.04(0.53), | |||
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Mouse |
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Physical Properties of Makatite |
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| [010] Distinct | |||
| Colorless, White. | |||
| 2.072 | |||
| Translucent | |||
| Acicular - Occurs as needle-like crystals. | |||
| Vitreous - Dull | |||
| white | |||
Optical Properties of Makatite |
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| CI meas= 0.015 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2345,KPDmeas= 0.232,KC= 0.2355 |
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| Biaxial (+), a=1.472-1.475, b=1.48, g=1.487-1.49, bire=0.0150 | |||
Calculated Properties of Makatite |
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relectron=2.09 gm/cc |
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| Fermion Index = 0.01364 Boson Index = 0.98636 |
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PEMakatite = 1.34 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Makatite is Not Radioactive |
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Makatite Classification |
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| 74.3.5.2 (74)Phyllosilicate Modulated Layers | |||
| (74.3)with joined strips | |||
| (74.3.5)Na phyllosilicates | |||
| VIII/G.05-20 VIII - Silicates | |||
| VIII/G - Intermediate between chain- and layered silicates | |||
| VIII/G.05 - Silinaite - Makatite series | |||
Other Makatite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Makatite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (MinSocAm) 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Makatite using: Visit our Advertisers for Makatite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks 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 Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Makatite Mineral Data : Ask about Makatite here : Print or Cut-and-Paste your Makatite Specimen Label here :
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