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General Hellyerite Information |
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 Chemical Formula: |
NiCO3•6(H2O) | ||
| Composition: |
Molecular Weight = 226.79 gm | ||
| Nickel 25.88 % Ni 32.93 % NiO | |||
| Hydrogen 5.33 % H 47.66 % H2O | |||
| Carbon 5.30 % C 19.41 % CO2 | |||
| Oxygen 63.49 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ni(CO3)•6(H2O) | ||
| Environment: |
Shear planes in serpentinite. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1958 | ||
| Locality: |
Old Lord Brassy mine, Heazlewood, TAS, Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Henry Hellyer (1826-), first surveyor general of Van Dieman's Land, TAS, Australia. | ||
| Name Pronunciation: |
Hellyerite + Pronunciation  |
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Hellyerite Image | |||
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Images:
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Hellyerite Crystallography |
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| Axial Ratios: |
a:b:c =1.4755:1:2.5593 | ||
| Cell Dimensions: |
a = 10.77, b = 7.299, c = 18.681, Z = 8; beta = 94° V = 1,464.94 Den(Calc)= 2.06 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 5.811(1), 9.318(0.89), 5.679(0.43), | ||
Physical Properties of Hellyerite |
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| Cleavage: |
{???} Perfect, {???} Very Good, {???} Very Good | ||
| Color: |
Light blue. | ||
| Density: |
1.97 | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Hardness: |
2.5 - Finger Nail | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Hellyerite |
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| Gladstone-Dale: |
CI meas= 0.023 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.066 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2439,KPDmeas= 0.255,KC= 0.261 Ncalc = 1.51 - 1.54 |
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| Optical Data: |
Biaxial (-), a=1.455, b=1.503, g=1.549, bire=0.0940, 2V(Calc)=86, 2V(Meas)=85. | ||
Calculated Properties of Hellyerite |
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| Electron Density: |
Bulk Density (Electron Density)=2.05 gm/cc note: Specific Gravity of Hellyerite =1.97 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0038195967 Boson Index = 0.9961804033 |
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| Photoelectric: |
PEHellyerite = 9.90 barns/electron U=PEHellyerite x rElectron Density= 20.29 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hellyerite is Not Radioactive |
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Hellyerite Classification |
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| Dana Class: |
15.01.07.01 (15)Hydrated Carbonates | ||
| (15.01)where A+ (XO3) · x(H2O) | |||
| (15.01.07)Dana Group | |||
| Strunz Class: |
05.CA.20 05 - CARBONATES (NITRATES) | ||
| 05.C - Carbonates without Additional Anions, with H2O | |||
| 05.CA -With medium-sized cations | |||
Other Hellyerite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Hellyerite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Hellyerite using: Visit our Advertisers for Hellyerite : A Bijoux Google Search for HellyeriteAdam's Minerals Google Search for Hellyerite Cape Minerals Google Search for Hellyerite Dakota Matrix Minerals Google Search for Hellyerite Excalibur Mineral Corp. Google Search for Hellyerite Exceptional Minerals Google Search for Hellyerite John Betts Fine Minerals Search for Hellyerite McDougall Minerals Google Search for Hellyerite Mineral News Website Link Rock and Mineral Shows Google Search for Hellyerite Weinrich Minerals, Inc. Google Search for Hellyerite Ask about Hellyerite here : Print or Cut-and-Paste your Hellyerite Specimen Label here :
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