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Faustite

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Formula:
(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
Colour:
Apple-green
Lustre:
Sub-Vitreous, Waxy, Dull
Hardness:
Specific Gravity:
2.92
Crystal System:
Triclinic
Member of:
Name:
Named by Richard C. Erd, M. D. Foster, and P. D. Procter, in honor of Dr. George Tobias Faust (August 27, 1908 Philadelphia, Pennsylvania, USA - February 27, 1985 Morristown, New Jersey, USA), mineralogist and petrologist with the U.S. Geological Survey.
Isostructural with:
Turquoise Group. The zinc analogue of Turquoise.

Visit gemdat.org for gemological information about Faustite.


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Classification of FaustiteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.DD.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
42.9.3.3

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
19.6.10

19 : Phosphates
6 : Phosphates of Zn

Physical Properties of FaustiteHide

Sub-Vitreous, Waxy, Dull
Transparency:
Translucent, Opaque
Colour:
Apple-green
Streak:
White to pale yellow-green
Hardness:
5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Fracture:
Conchoidal
Density:
2.92 g/cm3 (Measured)    2.99 g/cm3 (Calculated)

Optical Data of FaustiteHide

Type:
Biaxial (+)
Dispersion:
weak

Chemical Properties of FaustiteHide

Formula:
(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
IMA Formula:
ZnAl6(PO4)4(OH)8 · 4H2O

Crystallography of FaustiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.44 Å, b = 9.89 Å, c = 7.67 Å
α = 107.75°, β = 115.65°, γ = 69.65°
Ratio:
a:b:c = 0.752 : 1 : 0.776
Unit Cell V:
468.98 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Fine grained massive, nuggets, veins.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.70 (70)
6.14 (70)
3.68 (100)
3.44 (60)
3.28 (60)
2.92 (60)
2.89 (80)
2.05 (70)
Comments:
ICDD 6-216

Type Occurrence of FaustiteHide

Other Language Names for FaustiteHide

German:Faustit
Simplified Chinese:锌绿松石
Spanish:Faustita

Varieties of FaustiteHide

CuprofaustiteA Cu-bearing faustite (turquoise group).
Originally reported from Rhodope Mts, Bulgaria.

Relationship of Faustite to other SpeciesHide

Member of:
Other Members of this group:
Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1
TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
UM1981-32-PO:FeHFe2+Fe3+6(PO4)4-x[PO3(OH)]x(OH)8·4H2O

Common AssociatesHide

Associated Minerals Based on Photo Data:
Planerite9 photos of Faustite associated with Planerite on mindat.org.
Siderite1 photo of Faustite associated with Siderite on mindat.org.
Phosphophyllite1 photo of Faustite associated with Phosphophyllite on mindat.org.
Quartz1 photo of Faustite associated with Quartz on mindat.org.
Okenite1 photo of Faustite associated with Okenite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DD.05ChenevixiteCu2Fe3+2(AsO4)2(OH)4Mon. 2/m : P21/m
8.DD.05LuetheiteCu2Al2(AsO4)2(OH)4Mon. 2/m : P21/m
8.DD.10Akrochordite(Mn2+,Mg)5(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
8.DD.10GuanacoiteCu2Mg3(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
8.DD.15Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1
8.DD.15TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15AfmiteAl3(OH)4(H2O)3(PO4)(PO3OH) · H2OTric. 1 : P1
8.DD.20ChildreniteFe2+Al(PO4)(OH)2 · H2OOrth. mm2 : Ccc2
8.DD.20EosphoriteMn2+Al(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmca
8.DD.20Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2OMon.

Related Minerals - Dana Grouping (8th Ed.)Hide

42.9.3.1TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.2CoeruleolactiteTric. 1 : P1
42.9.3.4ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.5Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.6PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1
42.9.3.6AfmiteAl3(OH)4(H2O)3(PO4)(PO3OH) · H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.6.1TarbuttiteZn2(PO4)(OH)Tric. 1 : P1
19.6.2SpenceriteZn4(PO4)2(OH)2 · 3H2OMon. 2/m : P2/b
19.6.3HopeiteZn3(PO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
19.6.4ParahopeiteZn3(PO4)2 · 4H2OTric. 1 : P1
19.6.5Veszelyite(Cu,Zn)2Zn(PO4)2 · 2H2OMon. 2/m : P21/b
19.6.6Kipushite(Cu,Zn)5Zn(PO4)2(OH)6 · H2OMon.
19.6.7ScholziteCaZn2(PO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
19.6.8ParascholziteCaZn2(PO4)2 · 2H2OMon.
19.6.9EhrleiteCa4Be3Zn2(PO4)6 · 9H2OTric. 1 : P1
19.6.11Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.6.12JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth.
19.6.13SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
19.6.14PhosphophylliteZn2Fe(PO4)2 · 4H2OMon. 2/m : P21/b

Fluorescence of FaustiteHide

Not fluoescent

Other InformationHide

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 FaustiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist: 38: 964-972.
U. Kolitsch and G. Giester (2000): The crystal structure of faustite and its copper analogue turquoise. Mineralogical Magazine: 64: 905-913.

Internet Links for FaustiteHide

Localities for FaustiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill
        • Broken Hill South Mine (BHS Mine; South Mine)
Australian Min. 3:1 (1997)
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Minerals of Iron Monarch, Glyn L. Francis
  • Victoria
    • Mansfield Shire
      • Mansfield
W.D.Birch & D.A.Henry 1993. Phosphate Minerals of Victoria. The Mineralogical Society of Victoria special publication No. 3 pp 67-77
Belgium
 
  • Liège Province
    • Malmédy
      • Waimes (Weismes)
http://perso.infonie.be/jose.dehove/photos/Waimes.htm (ID by Prof. Van Tassel)
Bolivia
 
  • Oruro Department
    • Dalence Province
      • Huanuni
SEM analyses by Gene Foord, U.S. Geological Survey, done as part of an unpublished study of the turquoise group (analyses copies courtesy of Brian Kosnar)
  • Potosí Department
    • Potosí City
Alfredo Petrov collection
    • Rafael Bustillo Province (Bustillos Province)
      • Llallagua
Hyrsl, J. & A. Petrov (2006): Famous Mineral Localities: Llallagua, Bolivia. Mineralogical Record. 37: 117-162
Bulgaria
 
  • Haskovo Oblast (Khaskovo Oblast)
    • Mineralni Bani Obshtina
      • Spachievo ore field (Spahievo ore field)
[var: Cuprofaustite] Hikov, A., N. Velinova, S. Georgieva, A. Kunov (2011) Aluminium-phosphate-sulphate (APS) minerals in Bulgaria: characteristics and possibility for preservation. - In: V Intern. Symp. “Mineral Diversity Research and Preservation”, 9-15 October 2009, Sofia, Working papers, 37-48.
  • Kardzhali Oblast (Kurdzhali; Kărdžali; Kurdjali)
    • Momchilgrad Obshtina
Kunov, A. & Mandova, E. (1997): Supergene minerals of the Obichnik Au-Ag deposit (Eastern Rhodopes). Spisanie na Bulgarskoto Geologichesko Druzhestvo 58, 19-24. (in Bulgarian)
China
 
  • Hubei Province
    • Shiyan Prefecture
      • Yun Co.
Zhaoxin Han, Lijun Luan, and Chaoyou Wang (2004): Journal of Earth Sciences and Environment 26(2), 24-25
  • Hunan Province
    • Chenzhou Prefecture
      • Suxian District
Damao Wu and Yansong Tan (1981): Geology and Prospecting 17(9), 34-36
Germany
 
  • North Rhine-Westphalia
    • Sauerland
      • Meschede
        • Bestwig
Wittern: "Mineralfundorte in Deutschland", 2001
  • Rhineland-Palatinate
    • Westerwald
      • Linz am Rhein
        • Rheinbreitbach
Weiss: "Mineralienfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony
    • Oberlausitz
      • Görlitz
        • Rengersdorf
T. Witzke & T. Giesler (1997): Neufunde aus Sachsen (VI): Churchit-(Y), Cyrilovit, Faustit, Kidwellit, Meurigit und Nickelhexahydrit aus der Lausitz.- Lapis 22, 9, 36-38
Hungary
 
  • Heves Co.
    • Mátra Mts
      • Parádfürdő
Japan
 
  • Honshu Island
    • Chubu Region
      • Shizuoka Prefecture
        • Shimoda City
          • Rendaiji
Matsuyama et al. (1996) Chigaku Kenkyu (Geoscience Magazine), 44, 183-186.
UK
 
  • England
    • Cornwall
      • Liskeard District
        • Linkinhorne
          • Minions
Golley & Williams (1995): Cornish Mineral Reference Manual, p. 27
USA
 
  • Nevada
    • Elko Co.
      • Carlin District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Eureka Co.
      • Maggie Creek District
        • Schroeder Mt
Amer.Min.(1953) 38, 964-972
    • Humboldt Co.
      • Iron Point District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Lander Co.
      • Birch Creek District
NBMG Spec. Pub. 31 Minerals of Nevada
      • Carico Lake District
NBMG Spec. Pub. 31 Minerals of Nevada
  • Utah
    • Salt Lake Co.
      • Oquirrh Mts
        • Bingham District (West Mountain District)
Collected by Gerry Austin, in the collection of Alex Earl
Mineral and/or Locality  
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