Mineralogy Database

Hellyerite Mineral Data

Search Webmineral :

General Hellyerite Information

Help on Chemical  Formula: Chemical Formula: NiCO3•6(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Ni(CO3)•6(H2O)
Help on Environment: Environment: Shear planes in serpentinite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Old Lord Brassy mine, Heazlewood, TAS, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Henry Hellyer (1826-), first surveyor general of Van Dieman's Land, TAS, Australia.
Help on Name Pronunciation: Name Pronunciation: Hellyerite + Pronunciation Say HELLYERITE

Hellyerite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Green botryoidal hellyerite on matrix.
Location: Lord Brassey Mine, Heazlewood, Tasmania, Australia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Hellyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4755:1:2.5593
Help on Cell Dimensions: Cell Dimensions: a = 10.77, b = 7.299, c = 18.681, Z = 8; beta = 94° V = 1,464.94 Den(Calc)= 2.06
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.811(1), 9.318(0.89), 5.679(0.43),

Physical Properties of Hellyerite

Help on Cleavage: Cleavage: {???} Perfect, {???} Very Good, {???} Very Good
Help on Color: Color: Light blue.
Help on Density: Density: 1.97
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Hellyerite

Help on Gladstone-Dale: 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
Help on Optical Data: 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

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.05 gm/cc
note: Specific Gravity of Hellyerite =1.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0038195967
Boson Index = 0.9961804033
Help on Photoelectric: Photoelectric: PEHellyerite = 9.90 barns/electron
U=PEHellyerite x rElectron Density= 20.29 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hellyerite is Not Radioactive

Hellyerite Classification

Help on  Dana Class: Dana Class: (15)Hydrated Carbonates
  (15.01)where A+ (XO3) � x(H2O)
  (15.01.07)Dana Group Hellyerite NiCO3•6(H2O) C 2/c 2/m
Help on  Strunz Class: Strunz Class: 05.CA.20 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CA -With medium-sized cations
05.CA.20 Hellyerite NiCO3•6(H2O) C 2/c 2/m

Other Hellyerite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Hellyerite :

Ask about Hellyerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

Print or Cut-and-Paste your Hellyerite Specimen Label here :


Dana No: Strunz No: 05.CA.20





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.