Hellyerite Mineral Data + 
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- 15.1.7.1 Hellyerite NiCO3·6(H2O) C 2/c 2/m
- V/D.01-10 Barringtonite MgCO3·2(H2O) P1 or P1 Tri
- V/D.01-20 Nesquehonite Mg(HCO3)(OH)·2(H2O) P 21/n 2/m
- V/D.01-30 Lansfordite MgCO3·5(H2O) P 21/a 2/m
- V/D.01-40 Hellyerite NiCO3·6(H2O) C 2/c 2/m
- V/D.01-50 Monohydrocalcite CaCO3·(H2O) P 3112 3 2
- V/D.01-60 Ikaite CaCO3·6(H2O) C 2/c or Cc Mono
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. | ||
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 |
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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: |
relectron=2.05 gm/cc |
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| Fermion Index |
Fermion Index = 0.00381 Boson Index = 0.99619 |
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| Photoelectric: |
PEHellyerite = 9.90 barns/electron |
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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: |
15.1.7.1 (15)Hydrated Carbonates | ||
| (15.1)where A+ (XO3) · x(H2O) | |||
| (15.1.7)Dana Group | |||
| Strunz Class: |
V/D.01-40 V - Nitrates, Carbonates and Borates | ||
| V/D - Water-bearing carbonates without unfamiliar anions | |||
| V/D.01 - Barringtonite - Ikaite series | |||
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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Hellyerite using: Visit our Advertisers for Hellyerite : Translate Hellyerite Mineral Data : Ask about Hellyerite here : Print or Cut-and-Paste your Hellyerite Specimen Label here :
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