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Zaratite Mineral Data

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General Zaratite Information

Help on Chemical  Formula: Chemical Formula: Ni3(CO3)(OH)4•4(H2O)
Help on Composition: Composition: Molecular Weight = 376.17 gm
   Nickel    46.81 %  Ni   59.57 % NiO
   Hydrogen   3.22 %  H    28.73 % H2O
   Carbon     3.19 %  C    11.70 % CO2
   Oxygen    46.79 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni3(CO3)(OH)4•4(H2O)
Help on Environment: Environment: Secondary nickel mineral in Ni-bearing rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1851
Help on Locality: Locality: Cape Ortegal, Galicia, Spain. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Antonio Gil y Zarate (1793-1861), Spanish diplomat, general director of public education, and counselor of state.
Help on Name Pronunciation: Name Pronunciation: Zaratite Say ZARATITE
Help on Synonym: Synonym: Emerald Nickel

Zaratite Image

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Comments: Specimen exceptionally rich in apple green zaratite - a carbonate of nickel.
Location: Lord Brassy Mine Tasmania, Australia. Scale: 6.5 x 3.5 cm.
© John Veevaert

Zaratite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 6.16, Z = 1; V = 233.74 Den(Calc)= 2.67
Help on Crystal System: Crystal System: Isometric Space Group: Unk (in part amorphous)
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.07(1), 2.45(0.7), 8.93(0.7),

Physical Properties of Zaratite

Help on Cleavage: Cleavage: None
Help on Color: Color: Emerald green.
Help on Density: Density: 2.6
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite).
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: light green

Optical Properties of Zaratite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2191,KPDmeas= 0.225,KC= 0.2272
Ncalc = 1.59 - 1.61
Help on Optical Data: Optical Data: Isotropic, n=1.56-1.61.

Calculated Properties of Zaratite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.63 gm/cc
note: Specific Gravity of Zaratite =2.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0058696999
Boson Index = 0.9941303001
Help on Photoelectric: Photoelectric: PEZaratite = 18.13 barns/electron
U=PEZaratite x rElectron Density= 47.61 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zaratite is Not Radioactive

Zaratite Classification

Help on  Dana Class: Dana Class: 16b.04.01.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.04)where (A)m (B)n (XO3)p Zq � x(H2O), with (m+n):p=8:1
  (16b.04.01)Dana Group
16b.04.01.01 Zaratite Ni3(CO3)(OH)4•4(H2O) Unk (in part amorphous) Cubic
Help on  Strunz Class: Strunz Class: 05.DA.70 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DA -With medium-sized cations
05.DA.70 Zaratite Ni3(CO3)(OH)4•4(H2O) Unk (in part amorphous) Cubic

Other Zaratite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Zaratite :
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

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Dana No: 16b.04.01.01 Strunz No: 05.DA.70





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