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Tarbuttite

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Formula:
Zn2(PO4)(OH)
System:
Triclinic
Colour:
White, colourless, ...
Lustre:
Vitreous, Pearly
Hardness:
Name:
Named after Percy Coventry Tarbutt, a Director of the Broken Hill Exploration Company who collected some of the first specimens at Broken Hill (now Kabwe), Zambia.
A rare secondary zinc phosphate. A synthetic orthorhombic (libethenite-type) polymorph is known (Harrison et al., 1995).

Classification of Tarbuttite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
8.BB.35

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
41.6.7.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
19.6.1

19 : Phosphates
6 : Phosphates of Zn
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First Recorded Occurrence of Tarbuttite

Year of Discovery:
1907
Geological Setting of First Recorded Material:
Upper portion of the oxidation zone where phosphatic solutions reacted with earlier formed hemimorphite and cerussite.

Physical Properties of Tarbuttite

Vitreous, Pearly
Diaphaneity (Transparency):
Transparent, Translucent
Comment:
Lustre pearly on the cleavage surfaces.
Colour:
White, colourless, yellow, red green or brown; colourless in transmitted light.
Streak:
White
Hardness (Mohs):
Cleavage:
Perfect
On {010}, perfect.
Fracture:
Irregular/Uneven
Density:
4.12 g/cm3 (Measured)    4.19 g/cm3 (Calculated)

Crystallography of Tarbuttite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.55Å, b = 5.7Å, c = 6.47Å
α = 102.68°, β = 102.81°, γ = 86.88°
Ratio:
a:b:c = 0.974 : 1 : 1.135
Z:
8
Morphology:
Crystals equant to short prismatic [001]. Commonly found as sheaf-like aggregates or as crusts. Individual crystals commonly rounded and deeply striated.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Tarbuttite

Type:
Biaxial (-)
RI values:
nα = 1.660 nβ = 1.705 nγ = 1.713
2V:
Measured: 50°
Max Birefringence:
δ = 0.053
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
weak

Chemical Properties of Tarbuttite

Formula:
Zn2(PO4)(OH)
Essential elements:
All elements listed in formula:

Relationship of Tarbuttite to other Species

Other Members of Group:
ParadamiteZn2(AsO4)(OH)
8.BB.05AmblygoniteLiAl(PO4)F
8.BB.05MontebrasiteLiAl(PO4)(OH)
8.BB.05TavoriteLiFe3+(PO4)(OH)
8.BB.10Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
8.BB.10Zwieselite(Fe2+,Mn2+)2(PO4)F
8.BB.15SarkiniteMn22+(AsO4)(OH)
8.BB.15Triploidite(Mn2+,Fe2+)2(PO4)(OH)
8.BB.15Wagnerite(Mg,Fe2+)2(PO4)F
8.BB.15Wolfeite(Fe2+,Mn2+)2(PO4)(OH)
8.BB.15Stanĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)O
8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)O
8.BB.15HydroxylwagneriteMg2(PO4)(OH)
8.BB.20HoltedahliteMg2(PO4)(OH)
8.BB.20Satterlyite(Fe2+,Mg,Fe3+)2(PO4)(OH,O)
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,☐)
8.BB.30AdamiteZn2(AsO4)(OH)
8.BB.30EveiteMn22+(AsO4)(OH)
8.BB.30LibetheniteCu2(PO4)(OH)
8.BB.30OliveniteCu2(AsO4)(OH)
8.BB.30ZincolibetheniteCuZn(PO4)(OH)
8.BB.30ZincoliveniteCuZn(AsO4)(OH)
8.BB.30AuriacusiteFe3+Cu2+(AsO4)O
8.BB.35ParadamiteZn2(AsO4)(OH)
8.BB.40BarbosaliteFe2+Fe23+(PO4)2(OH)2
8.BB.40HentscheliteCuFe23+(PO4)2(OH)2
8.BB.40Lazulite(Mg,Fe2+)Al2(PO4)2(OH)2
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2
8.BB.40WilhelmkleiniteZnFe23+(AsO4)2(OH)2
8.BB.45TrolleiteAl4(PO4)3(OH)3
8.BB.50NamibiteCu(BiO)2(VO4)(OH)
8.BB.55PhosphoellenbergeriteMg14(PO4)6(HPO4,CO3)2(OH)6
8.BB.60UrusoviteCuAl(AsO4)O
8.BB.65TheoparacelsiteCu3(As2O7)(OH)2
8.BB.70TuraniteCu5(VO4)2(OH)4
8.BB.75StoiberiteCu5(VO4)2O2
8.BB.80FingeriteCu11(VO4)6O2
8.BB.85AverieviteCu6(VO4)2O2Cl2
8.BB.90LipscombiteFe2+Fe23+(PO4)2(OH)2
8.BB.90RichelliteCaFe23+(PO4)2(OH,F)2
8.BB.90ZinclipscombiteZnFe23+(PO4)2(OH)2
19.6.2SpenceriteZn4(PO4)2(OH)2 · 3H2O
19.6.3HopeiteZn3(PO4)2 · 4H2O
19.6.4ParahopeiteZn3(PO4)2 · 4H2O
19.6.5Veszelyite(Cu,Zn)2Zn(PO4)2 · 2H2O
19.6.6Kipushite(Cu,Zn)5Zn(PO4)2(OH)6 · H2O
19.6.7ScholziteCaZn2(PO4)2 · 2H2O
19.6.8ParascholziteCaZn2(PO4)2 · 2H2O
19.6.9EhrleiteCa4Be3Zn2(PO4)6 · 9H2O
19.6.10Faustite(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
19.6.11Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2O
19.6.12JungiteCa2Zn4Fe83+(PO4)9(OH)9 · 16H2O
19.6.13SchooneriteZnMn2+Fe22+Fe3+(PO4)3(OH)2 · 9H2O
19.6.14PhosphophylliteZn2Fe(PO4)2 · 4H2O

Other Names for Tarbuttite

Name in Other Languages:
German:Tarbuttit
Simplified Chinese:三斜磷锌矿
Spanish:Tarbuttita
Traditional Chinese:三斜磷鋅礦

Other Information

Other Information:
May form pseudomorphs after smithsonite, descloizite and possibly also hemimorphite. May alter to parahopeite.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Tarbuttite

Reference List:
Spencer (1907) Nature: 7: 215.

Spencer (1908) Mineralogical Magazine (1908): 15: 22.

Rosický (1913) Bull. Ac. Sc. Bohême: 18: no. 35.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 141.

Buttgenbach and Mélon (1931) Ac. Roy. Belgique, Bull., Cl. sc.: [5]: 17: 892.

Richmond (1938) American Mineralogist: 23: 881.

Richmond (1940) American Mineralogist: 25: 475.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 869-871.

Fanfani L., Zanazzi P.F. (1965), Dati strutturali sulla tarbuttite. Periodico di Mineralogia – Roma, 539-545.

American Mineralogist (1966): 51: 1218-1220.

Zeitschrift für Kristallographie: 123: 321-329.

Harrison, W.T. A., Vaughey, J. T., Dussack, L. L., Jacobson, A. J., Martin, T. E. and Stucky, G. D. (1995): Two new adamite-type phases, Co2(OH)PO4 and Zn2(OH)PO4: structure-directing effect of organic additives. J. Solid State Chem. 114, 151-8.

Internet Links for Tarbuttite

Specimens:
The following Tarbuttite specimens are currently listed for sale on minfind.com.

Localities for Tarbuttite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill
Australian Min. 3:1 (1997)
Australian Min. 3:1 (1997)
  • South Australia
    • Flinders Ranges
      • South Flinders Ranges
        • Martins Well
Johnston, C.W . & Hill, R.J. (1978): Zinc phosphates at Reaphook Hill South Australia. Mineralogical Record 9,(1), 20-24
China
 
Lairen Lai and Nicheng Shi (1984): Acta Petrologica Mineralogica et Analytica 3(1), 40-46
France
 
  • Languedoc-Roussillon
    • Pyrénées-Orientales
Berbain,C., Riley, T., Favreau, G., (2012): Phosphates des pegmatites du massif des Albères (Pyrénées-Orientales). Le Cahier des Micromonteurs. 117, 121-172
        • Argelès-sur-Mer
BERBAIN. C, RILEY. T, FAVREAU. G, (2012). Phosphates des pegmatites du massif des Albères. Ed Association française de Microminéralogie,
        • Collioure (Cotlliure)
BERBAIN. C, RILEY. T, FAVREAU. G, (2012) Phosphates des pegmatites du massif des Albères. Ed Association Française de Microminéralogie
Namibia
 
  • Karas Region
    • Lüderitz District
      • Rosh Pinah
Borg, G., Karner, K., Buxton, M., Armstrong, R., Schalk van der Merwe, W. (2003): Geology of the Skorpion supergene zinc deposit, southern Namibia. Economic Geology, 98, 749-771.; Jahn, S. (2007): Tarbuttit von der Skorpion Zink Mine, Namibia. Mineralien-Welt 18 (4), 56-66. (in German)
USA
 
  • Colorado
    • Lake Co.
      • Leadville District
        • Leadville
          • Iowa Gulch
Minerals of Colorado (1997) E.B. Eckels
Zambia
 
  • Central Province
    • Kabwe District
      • Kabwe (Broken Hill)
Nature (1907) 76, 215; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 734, 736, 870.
Mineral and/or Locality  
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