Goudeyite
A valid IMA mineral species
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About Goudeyite
Formula:
AlCu6(AsO4)3(OH)6 · 3H2O
Al may be replaced by minor Y and other REE.
Colour:
blue-green, yellow-green
Hardness:
3 - 4
Specific Gravity:
3.50
Crystal System:
Hexagonal
Member of:
Name:
Named in honor of Hatfield Goudey (13 December 1906, Red Bank, New Jersey, USA – 11 April 1985, Mateo, California, USA), economic geologist, mineral collector and dealer in microscopic specimens, San Mateo, California, USA, who contributed to the knowledge of the type locality. He was elected to the Micromounter's Hall of Fame in 2003.
Unique Identifiers
Mindat ID:
1732
Long-form identifier:
mindat:1:1:1732:5
GUID
(UUID V4):
(UUID V4):
02410c96-06c4-46b2-934b-c5d64dadc8c0
IMA Classification of Goudeyite
Approved
IMA Formula:
Cu6Al(AsO4)3(OH)6 · 3H2O
Approval year:
1978
First published:
1978
Classification of Goudeyite
8.DL.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
42.5.1.3
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)7(XO4)3Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)7(XO4)3Zq·xH2O
20.4.15
20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Gdy | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Goudeyite
Transparency:
Translucent
Colour:
blue-green, yellow-green
Streak:
greenish white
Hardness:
3 - 4 on Mohs scale
Density:
3.50(3) g/cm3 (Measured) 3.49 g/cm3 (Calculated)
Comment:
Berman balance on fragments of 8 mg in toluene at 22 C.
Optical Data of Goudeyite
Type:
Uniaxial (+)
RI values:
nω = 1.704 - 1.705 nε = 1.765 - 1.772
Max Birefringence:
δ = 0.061
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Weak
Comments:
O = pale yellow-green; E = green.
Chemistry of Goudeyite
Mindat Formula:
AlCu6(AsO4)3(OH)6 · 3H2O
Al may be replaced by minor Y and other REE.
Al may be replaced by minor Y and other REE.
Crystallography of Goudeyite
Crystal System:
Hexagonal
Cell Parameters:
a = 13.472(1) Å, c = 5.902(4) Å
Ratio:
a:c = 1 : 0.438
Unit Cell V:
927.67 ų (Calculated from Unit Cell)
Z:
2
Comment:
Point Group: 6/m or 6 (probable); Space Group: [P63/m or P63] (by analogy to mixite)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.63 Å | (100) |
| 2.920 Å | (50) |
| 3.235 Å | (46) |
| 2.546 Å | (46) |
| 4.41 Å | (43) |
| 2.677 Å | (42) |
| 3.367 Å | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Goudeyite
General Appearance of Type Material:
hair-like crystals, encrusting fractures and as cross-fiber veinlets
Place of Conservation of Type Material:
University of California, Santa Barbara, USA (specimen #8091).
Cotype material in the National Museum of Natural History, Smithsonian Institution, Washington, D.C., USA.
Cotype material in the National Museum of Natural History, Smithsonian Institution, Washington, D.C., USA.
Associated Minerals at Type Locality:
Reference:
Wise, W.S. (1978) Parnauite and goudeyite, two new copper arsenate minerals from the Majuba Hill Mine, Pershing County, Nevada. American Mineralogist: 63: 704-708.
Synonyms of Goudeyite
Other Language Names for Goudeyite
Relationship of Goudeyite to other Species
Member of:
Other Members of this group:
| Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Agardite-(Y) | YCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Calciopetersite | CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Mixite | BiCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Petersite-(Ce) | Cu6Ce(PO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Petersite-(La) | Cu6La(PO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Petersite-(Y) | (Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2O | Hex. |
| Plumboagardite | (Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O | Hex. 6/m : P63/m |
Common Associates
Associated Minerals Based on Photo Data:
| 5 photos of Goudeyite associated with Olivenite | Cu2(AsO4)(OH) |
| 5 photos of Goudeyite associated with Quartz | SiO2 |
| 4 photos of Goudeyite associated with Kaolinite | Al2(Si2O5)(OH)4 |
| 3 photos of Goudeyite associated with Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 3 photos of Goudeyite associated with Cornubite | Cu5(AsO4)2(OH)4 |
| 3 photos of Goudeyite associated with Clinoclase | Cu3(AsO4)(OH)3 |
| 3 photos of Goudeyite associated with Arsenogorceixite | BaAl3(AsO4)(AsO3OH)(OH)6 |
| 3 photos of Goudeyite associated with Goethite | α-Fe3+O(OH) |
| 3 photos of Goudeyite associated with Bayldonite | PbCu3(AsO4)2(OH)2 |
| 2 photos of Goudeyite associated with Kaolinite-Serpentine Group |
Related Minerals - Strunz-mindat Grouping
| 8.DL.05 | Foggite | CaAl(PO4)(OH)2 · H2O |
| 8.DL.10 | Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
| 8.DL.10 | Millisite | (Na,K)CaAl6(PO4)4(OH)9 · 3H2O |
| 8.DL.10 | Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| 8.DL.10 | Fluorowardite | NaAl3(PO4)2F2(OH)2(H2O)2 |
| 8.DL.15 | Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Y) | YCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Dy) | (Dy,La)Cu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Mixite | BiCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(Y) | (Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Plumboagardite | (Pb,REE,Ca)Cu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Calciopetersite | CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(Ce) | Cu6Ce(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(La) | Cu6La(PO4)3(OH)6 · 3H2O |
| 8.DL.20 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) |
| 8.DL.20 | Dugganite | Pb3Zn3(AsO4)2(TeO6) |
| 8.DL.20 | Kuksite | Pb3Zn3(PO4)2(TeO6) |
| 8.DL.20 | Wallkilldellite | Ca2Mn2+3(AsO4)2(OH)4 · 9H2O |
| 8.DL.20 | Wallkilldellite-(Fe) | (Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O |
| 8.DL.25 | Angastonite | CaMgAl2(PO4)2(OH)4 · 7H2O |
| 8.DL.30 | Långbanshyttanite | Pb2Mn2Mg(AsO4)2(OH)4 · 6H2O |
Other Information
Notes:
Dissolves slowly in dilute HCl
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Goudeyite
mindat.org URL:
https://www.mindat.org/min-1732.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Goudeyite
Localities for Goudeyite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Brazil | |
| Márcia Abrahão Moura (2007) +1 other reference |
Chile | |
| Dr. Bob Jenkins collection +2 other references |
| Dakota Matrix Mineral catalogue 2010 | |
Czech Republic | |
| Jakub Plasil |
| Plášil et al. (2014) |
France | |
| Issn 0036-7699 +9 other references |
| Favreau G. et al. (1996) |
| Hatert et al. (2020) |
| Lheur (2023) |
| www.mine-capgaronne.fr (2003) |
Germany | |
| Kolitsch et al. (2019) |
| ... |
| Weiss: "Mineralienfundstellen et al. (Munich) |
Greece | |
| Branko Rieck |
| |
Italy | |
| Guastoni (2009) |
| Guastoni A. (2009) | |
| Stara et al. (1993) |
| Conedera M. et al. (2016) |
| Vecchi et al. (2013) |
Japan | |
| Royal Ontario Museum specimen (obtained november 1982 from Hori Mineralogy, Tokyo) |
Russia | |
| Kasatkin et al. (2014) |
South Africa | |
| Rick Turner collection |
Spain | |
| Calvo Rebollar et al. (2022) |
Switzerland | |
| Meisser N. et al. (2020) |
USA | |
| R. Housley (2008) |
| American Mineralogist +2 other references |
| - (n.d.) |
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Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany