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Hydromagnesite Mineral Data + |
General Hydromagnesite Information |
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| Mg5(CO3)4(OH)2·4(H2O) | |||
| Molecular Weight = 467.64 gm | |||
| Magnesium 25.99 % Mg 43.09 % MgO | |||
| Hydrogen 2.16 % H 19.26 % H2O | |||
| Carbon 10.27 % C 37.64 % CO2 | |||
| Oxygen 61.58 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg5(CO3)4(OH)2·4(H2O) | |||
| Valid Species (Pre-IMA) 1835 | |||
| Castle Point, Hoboken, Hudson County, New Jersey, USA Link to MinDat.org Location Data. | |||
| Named after its chemical composition. | |||
| ICSD 920 | |||
| PDF 25-513 | |||
Hydromagnesite Image | |||
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Hydromagnesite Crystallography |
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| a:b:c =1.1308:1:0.9373 | |||
| a = 10.11, b = 8.94, c = 8.38, Z = 2; beta = 114.58° V = 688.78 Den(Calc)= 2.25 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | |||
| By Intensity(I/Io): 5.79(1), 2.899(0.82), 9.2(0.39), | |||
Mouse |
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Physical Properties of Hydromagnesite |
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| [010] Perfect, [100] Distinct | |||
| Colorless, White. | |||
| 2.16 - 2.2, Average = 2.18 | |||
| Transparent | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Acicular - Occurs as needle-like crystals. | |||
| Encrustations - Forms crust-like aggregates on matrix. | |||
| 3.5 - Copper Penny | |||
| Fluorescent, Short UV=green, Long UV=bluish white. | |||
| Silky | |||
| Nonmagnetic | |||
| white | |||
Optical Properties of Hydromagnesite |
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| CI meas= -0.055 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.022 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2363,KPDmeas= 0.2439,KC= 0.2311 |
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| Biaxial (+), a=1.523, b=1.527, g=1.545, bire=0.0220, 2V(Calc)=52, 2V(Meas)=30-90. Dispersion none. | |||
| none. | |||
| none. | |||
| none. | |||
Calculated Properties of Hydromagnesite |
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relectron=2.29 gm/cc |
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| Fermion Index = 0.02741 Boson Index = 0.97259 |
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PEHydromagnesite = 0.77 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hydromagnesite is Not Radioactive |
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Hydromagnesite Classification |
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| 16b.7.1.1 (16b)Carbonates - Hydroxyl or Halogen | |||
| (16b.7)Dana Type | |||
| (16b.7.1)Dana Group | |||
| V/E.01-10 V - Nitrates, Carbonates and Borates | |||
| V/E - Water-bearing carbonates with unfamiliar anions | |||
| V/E.01 - Hydromagnesite - Brugnatellite series | |||
Other Hydromagnesite Information |
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| NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) | |||
| Links to other databases for Hydromagnesite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 - Minerals of Wisconsin 15 -QUT Mineral Atlas 16 - WWW-MINCRYST 17 -École des Mines de Paris Search for Hydromagnesite using: Visit our Advertisers for Hydromagnesite : Translate Hydromagnesite Mineral Data : Ask about Hydromagnesite here : Print or Cut-and-Paste your Hydromagnesite Specimen Label here :
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