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Al2/3Fe3+4(SO4)6(OH)2 · 20H2O
Pale lemon-yellow to deep yellow
2 - 3
Specific Gravity:
2.163 (Calculated)
Crystal System:
Member of:
In allusion to its composition containing aluminum in substitution for ferric iron and its relationship to copiapite.

Classification of Aluminocopiapite

Approved, 'Grandfathered' (first described prior to 1959)

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
Dana 7th ed.:

10 : Miscellaneous

25 : Sulphates
11 : Sulphates of Fe and other metals

Physical Properties of Aluminocopiapite

Transparent, Translucent
Pale lemon-yellow to deep yellow
no data
2 - 3 on Mohs scale
by analogy to copiapite group
Perfect on {010}; imperfect on {101}
2.163 g/cm3 (Calculated)

Optical Data of Aluminocopiapite

Biaxial (+)
RI values:
nα = 1.525 nβ = 1.535 - 1.540 nγ = 1.585 - 1.590
Measured: 45° , Calculated: 40°
Max Birefringence:
δ = 0.060 - 0.065
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Y= colorless
Z= Greenish yellow

Chemical Properties of Aluminocopiapite

Al2/3Fe3+4(SO4)6(OH)2 · 20H2O
IMA Formula:
(Al,Mg)Fe3+4(SO4)6(OH,O)2 · 20H2O

Crystallography of Aluminocopiapite

Crystal System:
Class (H-M):
1 - Pinacoidal
Space Group:
Cell Parameters:
a = 7.3(1) Å, b = 18.8(2) Å, c = 7.31(1) Å
α = 91.5(2)°, β = 102.3(1)°, γ = 98.7(1)°
a:b:c = 0.388 : 1 : 0.389
Unit Cell V:
967.14 ų (Calculated from Unit Cell)
As minute scales and efforvescences.

Type Occurrence of Aluminocopiapite

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 93834, 103544.

Other Language Names for Aluminocopiapite

Relationship of Aluminocopiapite to other Species

Member of:
Other Members of this group:
CalciocopiapiteCaFe4(SO4)6(OH)2 · 10H2O
CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2O
CuprocopiapiteCuFe4(SO4)6(OH)2 · 20H2O
FerricopiapiteFe5(SO4)6O(OH) · 20H2O
MagnesiocopiapiteMgFe3+4(SO4)6(OH)2 · 20H2O
ZincocopiapiteZnFe3+4(SO4)6(OH)2 · 18H2O

Common Associates

Associated Minerals Based on Photo Data:
Gypsum1 photo of Aluminocopiapite associated with Gypsum on
Butlerite1 photo of Aluminocopiapite associated with Butlerite on
Aubertite1 photo of Aluminocopiapite associated with Aubertite on
Halotrichite1 photo of Aluminocopiapite associated with Halotrichite on
Pyrite1 photo of Aluminocopiapite associated with Pyrite on
Magnesiocopiapite1 photo of Aluminocopiapite associated with Magnesiocopiapite on
Cinnabar1 photo of Aluminocopiapite associated with Cinnabar on
Baryte1 photo of Aluminocopiapite associated with Baryte on

Related Minerals - Nickel-Strunz Grouping

7.DB.05AubertiteCuAl(SO4)2Cl · 14H2O
7.DB.05Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2O
7.DB.05Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O
7.DB.10KhademiteAl(SO4)F · 5H2O
7.DB.10RostiteAl(SO4)(OH) · 5H2O
7.DB.15JurbaniteAl(SO4)(OH) · 5H2O
7.DB.20Minasragrite(V4+O)(SO4) · 5H2O
7.DB.20Orthominasragrite(V4+O)(SO4) · 5H2O
7.DB.20Anorthominasragrite(V4+O)(SO4) · 5H2O
7.DB.25Bobjonesite(V4+O)(SO4) · 3H2O
7.DB.30AmarantiteFe3+2(SO4)2O · 7H2O
7.DB.30HohmanniteFe3+2(SO4)2O · 8H2O
7.DB.30MetahohmanniteFe3+2(SO4)2O · 4H2O
7.DB.35CalciocopiapiteCaFe4(SO4)6(OH)2 · 10H2O
7.DB.35CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2O
7.DB.35CuprocopiapiteCuFe4(SO4)6(OH)2 · 20H2O
7.DB.35FerricopiapiteFe5(SO4)6O(OH) · 20H2O
7.DB.35MagnesiocopiapiteMgFe3+4(SO4)6(OH)2 · 20H2O
7.DB.35ZincocopiapiteZnFe3+4(SO4)6(OH)2 · 18H2O

Related Minerals - Hey's Chemical Index of Minerals Grouping

25.11.2SideronatriteNa2Fe(SO4)2(OH) · 3H2O
25.11.3MetasideronatriteNa2Fe(SO4)2(OH) · H2O
25.11.4FerrinatriteNa3Fe(SO4)3 · 3H2O
25.11.5AmarilliteNaFe(SO4)2 · 6H2O
25.11.7KrausiteKFe(SO4)2 · H2O
25.11.8GoldichiteKFe(SO4)2 · 4H2O
25.11.9JarositeKFe3+ 3(SO4)2(OH)6
25.11.10VoltaiteK2Fe2+5Fe3+3Al(SO4)12 · 18H2O
25.11.11UngemachiteK3Na8Fe(SO4)6(NO3)2 · 6H2O
25.11.12MetavoltineNa6K2FeFe6(SO4)12O2 · 18H2O
25.11.15Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2O
25.11.16Mohrite(NH4)2Fe(SO4)2 · 6H2O
25.11.17Lonecreekite(NH4)Fe3+(SO4)2 · 12H2O
25.11.19BotryogenMgFe3+(SO4)2(OH) · 7H2O
25.11.21Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O
25.11.23SturmaniteCa6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12 · 25H2O
25.11.26HalotrichiteFeAl2(SO4)4 · 22H2O
25.11.27Idrizite(Mg,Fe)(Al,Fe)2(SO4)3(OH)2 · 15H2O or near
25.11.28LishizheniteZnFe2(SO4)4 · 14H2O
25.11.29ZincovoltaiteK2Zn5Fe3+3Al(SO4)12 · 18H2O

Related Minerals - Dana Grouping (8th Ed.) · 20H2O · 20H2O · 20H2O · 20H2O · 10H2O · 18H2O

Other Information

Somewhat soluble in water.
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 Aluminocopiapite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Berry, L.G. (1947) Composition and optics of copiapite. University of Toronto Studies, Geological Series 51: 21-34.
Fleischer M (1947) New mineral names. American Mineralogist: 32: 483-485.
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.: 623, 625.
Jolly, J.H., Foster, H.L. (1967) X-ray diffraction data of aluminocopiapite. American Mineralogist: 52: 1220-1223.
Bayliss, P., Atencio, D. (1985) X-ray powder-diffraction data and cell parameters for copiapite-group minerals. The Canadian Mineralogist: 23: 53-56.
Majzlan, J. & Michallik, R. (2007): The crystal structures, solid solutions, and infrared spectra of copiapite-group minerals. Mineralogical Magazine 71, 553-569.

Internet Links for Aluminocopiapite URL:
Please feel free to link to this page.

Localities for Aluminocopiapite

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.
(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.
  • San Juan
    • Calingasta Department
      • Calingasta
        • Quebrada Alcaparrosa
MIKON and Gunnar Farber catalogues (2005)
  • Carinthia
    • Gurktaler Alpen
      • Metnitz
G. Niedermayr: Carinthia II 186./106.:130 (1996)
  • Lower Austria
    • Waldviertel
      • Drosendorf-Zissersdorf
        • Wollmersdorf (Zettlitz-Wollmersdorf)
Taucher, J. (1993): Halotrichit, Aluminocopiapit, Magnesiocopiapit, Szomolnokit, Alunogen, Gips und Calcit aus dem aufgelassenen Graphitbergbau bei Zettlitz, nahe Wollmersdorf bei Eibenstein, Niederösterreich, Österreich. Matrixx - Mineralogische Nachrichten aus Österreich, 2, 47-51.
  • Styria
    • Leutschach
Taucher, J. (1992); Exel, R. (1993)
  • São Paulo
Rafael Hernandes Corrêa-Silva Collection
  • Plovdiv Oblast
    • Plovdiv
Atanassova, R. & Kerestedjian, T. (2009): Efflorescent minerals from the metallurgical waste heaps of the KCM non-ferrous metal smelter, Plovdiv, Bulgaria. Geochemistry, Mineralogy and Petrology, 47, 51-63.
  • Nova Scotia
    • Cape Breton Co.
      • Sydney coalfield
Erwin L. Zodrow and Keith McCandlish, "Hydrated Sulfates in the Sydney Coalfiled, Cape Breton, Nova Scotia", Canadian Mineralogist, vol. 16, pp.17-22, 1978.
          • #26 Colliery
Handbook of Mineralogy
        • Point Aconi
E.L. Zodrow and K. McCandlish, "Hydrated Sulfates in the Sydney Coalfield, Cape Breton, Nova Scotia," Canadian Mineralogist, vol. 16, pt. 1, pp. 17-22, 1978.
  • Antofagasta Region
    • Antofagasta Province
      • Mejillones
        • Mejillones peninsula
Natural History Museum Vienna collection
      • Sierra Gorda District
Samples analysed by Dr. Jochen Schluter, Curator of Hamburg Mineralogical Museum, Germany
    • El Loa Province
      • Calama
        • Cerritos Bayos; Kampf, A.R.; Mills, S.J.; Housley, R.M.; Williams, P.A.; Dini, M. (2012): Alcaparrosaite, K3Ti4+Fe3+(SO4)4O(H2O)2, a new hydrophobic Ti4+ sulfate from Alcaparrosa, Chile. Mineralogical Magazine 76, 851-861.
Czech Republic
  • Bohemia (Böhmen; Boehmen)
    • Hradec Králové Region
      • Trutnov (Trautenau)
        • Radvanice
Jirásek, J.: Thermal Changes of the Rocks in the Dump Pile of the Kateřina Colliery in Radvanice (Eastern Bohemia). Ostrava: VSB – Technical University of Ostrava, Institute of Geological Engineering - 541, 2001. 69 p.
  • Auvergne-Rhône-Alpes
    • Rhône
      • Le Bois d'Oingt
        • Chessy-les-Mines
Chollet Pascal Collection
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • La Chapelle-en-Valgaudemar (La Chapelle-en-Valgaudémar)
Bourgoin, V., Favreau, G., Boulliard, J.-C. (2011): Jas Roux: un gisement exceptionnel à minéraux de thallium. Le Cahier des Micromonteurs, 3-2011, 2-91.
  • Mecklenburg-West Pomerania
    • Neubrandenburg
      • Friedland
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
  • Saxony-Anhalt
    • Halle
      • Petersberg
Handbook of Mineralogy
  • Saxony
    • Dresden
Thalheim, K.; Reichel, W. & Witzke, T. (1991): Die Minerale des Döhlener Beckens.- Schriften des Staatlichen Museums für Mineralogie und Geologie zu Dresden, Nr. 3
    • Oberlausitz
      • Niesky
        • Horscha
Witzke, T. & Giesler, T. (2007): Der Schieferabbau Pansberg bei Horscha in der Lausitz, Sachsen. Lapis 32 (7-8), 68-73; 86.
  • Thuringia
    • Gera
      • Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Plaka
          • Plaka Mines
Hanke, H. (1994): Neues aus Lavrion: Eisen-, kupfer- und kobalthaltige Hydro-Sulfate aus dem Revier Plaka. Emser Hefte, 1994 (2).
Branko Rieck Collection
  • Borsod-Abaúj-Zemplén Co.
    • Rudabányai Mts
      • Rudabánya
Szakáll: Minerals of Rudabánya, 2001
Sánoor Szakáll, Mária Foldvári, Gábor Papp, Péter Kovács-pálffy, Árpád Kovács (1997) Secondary Sulphate Minerals From Hungary. Acta Mineralogica-petrographica, Szeged, Xxxviii, Supplementum, 7-63.
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
I. Campostrini, 2008, pers. com. [M.E. Ciriotti]
            • Porto Levante
              • Faraglioni di Levante (Grotte dei Faraglioni; Grotte del Faraglione; "Grotte de Faraglione")
                • Faraglione Nico (Faraglione Piccolo; Faragghiune Nicu)
I. Campostrini, 2008, pers. com. [M.E. Ciriotti]
  • Tuscany
    • Livorno Province
      • Elba Island
        • Capoliveri
J. Göske, T. Witzke, H. Pöllmann, S. Stöber (1997) - Neufunde von Sekundarmineralen in der Lagerstatte Calamita/Insel Elba - Der Aufschluss, 48: 305-313.
    • Siena Province
      • Chiusdino
Brizzi G., Ciselli I, Santucci A. (1986) - Ultime novità da le Cetine di Cotorniano - Riv. Miner. Ital., Milano, fasc. 3, pp.145-155; Menchetti, S., Batoni, M., Batacchi, C., Borselli, G., Brogi, A., Ceccantini, L., Fassina, B., Marchesini, M., Rossellini, A. & Ruggieri, G. (2015): Le Cetine di Cotorniano. Miniera e minerali. Associazione Micro-Mineralogica Italiana, Cremona, 354 p.
  • Buskerud
    • Hol
      • Ustaoset
Neumann, H. (1985): Norges Mineraler. Norges geologiske Undersøkelse Skrifter 68, 278 pp (p. 112).
  • Oslo
    • Old Oslo
Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter. 68, 278p.( p. 112).
  • Košice Region
    • Gelnica Co.
Šoltés S., Lintnerova O., Šottník P. 2006: Copiapite group and halotrichite in old mine heaps near Smolník. Mineralogia Polonica - Special Papers, vol. 28, 211-213
  • Catalonia
    • Barcelona
      • Vallès Occidental
        • Montcada i Reixac
Joan Rosell
  • Wallis (Valais)
    • Anniviers Valley
      • Saint-Luc
Ansermet, S. with contributions of Meisser, N. (2012): Mines et minéraux du Valais. II. Anniviers et Tourtemagne. Musée de la Nature (Sion), Musée Cantonal de Géologie (Lausanne), and Editions Porte-Plumes (Ayer), 374 pp.
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
  • England
    • Cornwall
      • Camborne - Redruth - St Day District
        • Camborne
          • Tuckingmill
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
  • Crimea Oblast'
    • Crimea peninsula
      • Balaklava area
Dobrovolskaya T.I., Polkanov Y.A. The Paleovolcano Fiolent. Giude (2004) - Simferopol, 2004, 19 p. (in Russ.) Oleg V. Zinchenko at al. (2008).The mineralogy of seasonal sulfates in the cape Fiolent - Zapiski Ukrainskogo Mineralogichnogo Tovaristva (Proceeding Ukrainian Mineralogical Society), 2008, #5, p. 75-83 (in Ukr.)
    • Simferopol area
      • Mramornoe Village area
Alexander I. Tischenko (1996)/ Minerals of the Crimea. - World of stones, 1996, #9, p. 9-18.
  • Alaska
    • Southeast Fairbanks Borough
      • Forty Mile River
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
  • California
    • Mono Co.
      • White Mts
        • White Mountain Peak
    • San Diego Co.
      • Lakeside
SDSU Geology Department unpublished field trip guide, circa 1980.
    • Shasta Co.
      • Klamath Mts
        • West Shasta Copper - Zinc District
          • Iron Mountain [town]
            • Iron Mountain
              • Iron Mountain Mine (Number 8; Confidence; Old Mine)
Jamieson, H. E., Robinson, C., Alpers, C. N., McCleskey, R. B., Nordstrom, D. K., & Peterson, R. C. (2005). Major and trace element composition of copiapite-group minerals and coexisting water from the Richmond mine, Iron Mountain, California. Chemical Geology, 215(1), 387-405.
    • Trinity Co.
      • Coastal Range
        • Island Mountain
          • Moose Peak
  • Colorado
    • Gilpin Co.
      • Central City District
  • South Dakota
    • Lawrence Co.
      • Bald Mountain District
Mineral Webzine, Dec. 2001
  • Utah
    • Emery Co.
      • San Rafael District (San Rafael Swell)
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
  • Virginia
    • Louisa Co.
      • Gold-Pyrite Belt
        • Mineral
Minerals of Virginia, 1990 by R. V. Dietrich
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