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Faustite

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Formula:
(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
System:
Triclinic
Colour:
Apple-green
Lustre:
Sub-Vitreous, Waxy, Dull
Hardness:
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.

Classification of Faustite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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
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First Recorded Occurrence of Faustite

Year of Discovery:
1953

Occurrences of Faustite

Geological Setting:
Argillized shales

Physical Properties of Faustite

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

Crystallography of Faustite

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

Optical Data of Faustite

Type:
Biaxial (+)
Dispersion:
weak

Chemical Properties of Faustite

Formula:
(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
Essential elements:
All elements listed in formula:

Relationship of Faustite to other Species

Member of:
Other Members of Group:
Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2O
ChalcosideriteCu(Fe3+,Al)6(PO4)4(OH)8 · 4H2O
PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
8.DD.05ChenevixiteCu2Fe23+(AsO4)2(OH)4
8.DD.05LuetheiteCu2Al2(AsO4)2(OH)4
8.DD.10Akrochordite(Mn2+,Mg)5(AsO4)2(OH)4 · 4H2O
8.DD.10GuanacoiteCu2Mg3(AsO4)2(OH)4 · 4H2O
8.DD.15Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2O
8.DD.15ChalcosideriteCu(Fe3+,Al)6(PO4)4(OH)8 · 4H2O
8.DD.15PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
8.DD.15TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
8.DD.15AfmiteAl3(OH)4(H2O)3(PO4)(PO3OH) · H2O
8.DD.20Childrenite(Fe2+,Mn2+)Al(PO4)(OH)2 · H2O
8.DD.20Eosphorite(Mn2+,Fe2+)Al(PO4)(OH)2 · H2O
8.DD.20Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2O
19.6.1TarbuttiteZn2(PO4)(OH)
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
19.6.11Aheylite(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 Faustite

Name in Other Languages:
German:Faustit
Simplified Chinese:锌绿松石
Spanish:Faustita

Other Information

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 Faustite

Reference List:
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 Faustite

Localities for Faustite

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)
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Minerals of Iron Monarch, Glyn L. Francis
  • Victoria
    • 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)
Kunov, A. & Petrov, P. (2001): Beaverite from the Chala gold-base metal ore deposit: a new mineral for Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 38, 67-71.
  • 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)
  • Plovdiv Oblast
[var: Cuprofaustite] No reference listed
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
Mineral and/or Locality  
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