Tarbuttite Mineral Data

Tarbuttite Mineral Data
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General Tarbuttite Information

Help on Chemical Formula: Chemical Formula: Zn2(PO4)(OH)
Help on Composition: Composition: Molecular Weight = 242.76 gm
   Zinc        53.87 %  Zn   67.05 % ZnO
   Phosphorus  12.76 %  P    29.24 % P2O5
   Hydrogen     0.42 %  H     3.71 % H2O
   Oxygen      32.95 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn2(PO4)(OH)
Help on Environment: Environment: Secondary mineral in the oxidized portions of Zn-bearing ore zones.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1907
Help on Locality: Locality: Kabwe, Broken Hill mines, northwestern Zambia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Percy Coventry Tarbutt, director of the Broken Hill Explaration Co., Zambia.
Help on Name Pronunciation: Name Pronunciation: Tarbuttite + Pronunciation Say TARBUTTITE
Help on Synonym: Synonym: Salmoite
 

Tarbuttite Image

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Tarbuttite

Comments: Clear, prismatic crystal of tarbuttite on matrix.
Location: Broken Hill Mine, Kabwe, Central Zambia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tarbuttite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8795:1:0.8583
Help on Cell Dimensions: Cell Dimensions: a = 5.657, b = 6.432, c = 5.521, Z = 2; alpha = 102.45°, beta = 87.6°, gamma = 102.567° V = 191.29 Den(Calc)= 4.21
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.78(1), 3.7(0.9), 6.12(0.9),
Help on Forms: Forms:

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Forms: ( 3 4 7) ( 1 2 1) ( 1 2 1) ( 0 1 0) ( 1 1 0) ( 2 1 0) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Cocco G , Fanfani L , Zanazzi P F , Zeitschrift fur Kristallographie , 123 (1966) p.321-329, The crystal structure of tarbuttite, Zn2(OH)PO4, Locality: Broken Hill, Rhodesia

View Additional jPOWD Structure files for Tarbuttite
[1]
 

Physical Properties of Tarbuttite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Brown, Colorless, Green, White, Light yellow.
Help on Density: Density: 4.14
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Habit: Habit: Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Non-Fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Tarbuttite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1645,KPDmeas= 0.1673,KC= 0.1721
Ncalc = 1.71 - 1.72
Help on Optical Data: Optical Data: Biaxial (-), a=1.66, b=1.705, g=1.713, bire=0.0530, 2V(Calc)=44, 2V(Meas)=50. Dispersion strong.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
 

Calculated Properties of Tarbuttite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.96 gm/cc
note: Specific Gravity of Tarbuttite =4.14 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PETarbuttite = 27.58 barns/electron
U=PETarbuttite x rElectron Density= 109.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tarbuttite is Not Radioactive
 

Tarbuttite Classification
Help on Dana Class: Dana Class: 41.06.07.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.06)where (A)2 (XO4) Zq
  (41.06.07)Tarbuttite Group
 
41.06.07.01 Tarbuttite Zn2(PO4)(OH) P1 1
 
41.06.07.02 Paradamite Zn2(AsO4)(OH) P1 1
Help on Strunz Class: Strunz Class: 08.BB.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1
 
08.BB.35 Paradamite Zn2(AsO4)(OH) P1 1
 
08.BB.35 Tarbuttite Zn2(PO4)(OH) P1 1
 

Other Tarbuttite Information
Help on See Also: See Also: Links to other databases for Tarbuttite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Tarbuttite

Zn2(PO4)(OH)
Dana No: 41.06.07.01 Strunz No: 08.BB.35
Locality:

 

Notes: