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Alum Group

Formula:
XAl(SO
 
4
)
 
2
·12H
 
2
O


A generic term for hydrated sulphates of aluminium (or other trivalent cations) and an alkali (or comparable monovalent cation).
A large number of synthetic analogues is known.
Alums crystallize in one of three different crystal structures. These classes are called α-, β- and γ-alums.

Classification of Alum Group

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Chemical Properties of Alum Group

Formula:
XAl(SO
 
4
)
 
2
·12H
 
2
O

Relationship of Alum Group to other Species

Minerals in Group:
Alum-(K):
KAl[SO
 
4
]
 
2
 · 12H
 
2
O
Alum-(Na):
NaAl[SO
 
4
]
 
2
 · 12H
 
2
O

Other Names for Alum Group

Synonyms:
Alun
Other Languages:
German:Alaun

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alum Group

Reference List: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.: 471-472.

Internet Links for Alum Group

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    Localities for Alum Group

    Hide Locality List
    The 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. ? 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.
    Estonia
     
    • Harju Co.
      • Maardu
    France
     
    • Midi-Pyrénées
      • Aveyron
        • Decazeville
          • Decazeville coal basin
            • Aubin
    		R. Pierrot, R. Pulou, P. Picot : "Inventaire Minéralogique de la France N° 7 : Aveyron", BRGM, 1977
    Germany
     
    • Thuringia
      • Saalfeld
        • Garnsdorf
    		Wittern: "Mineralfundorte in Deutschland", 2001
      • Thuringian Forest
        • Reichmannsdorf
          • Schmiedefeld
    		http://www.untertage.com/cms/content/view/58/2/
    Iceland
     
    • Myvatn
    Italy
     
    • Campania
      • Phlegrean Volcanic Complex
        • Naples Province
          • Phlegrean Fields
            • Pozzuoli
    		http://70.1911encyclopedia.org/V/VO/VOLCANO.htm.
    • Sicily
      • Messina Province
        • Lipari
          • Eolie Islands (Aeolian Islands)
    		Russo, M. (2006): Il gesso delle valli del Faurdo e del Caolino (Isola di Lipari, Messina, Sicilia). Micro (notizie mineralogche), 2006, 51-54.
    • Tuscany
      • Lucca Province
        • Apuan Alps
          • Pietrasanta
            • Valdicastello Carducci
    		Benvenuti M., Costagliola P., Tanelli G., Cortecci G., Lattanzi P. - Geology, Mineralogy and Chemistry of the Baryte-Pyrite(Pb-Ag) deposit at Pollone, Apuane Alps. Boll. Soc. Geol. It., 109, fasc. III, pp. 735-741.
    Mexico
     
    • Baja California Norte
      • Mun. de Mexicali
        • San Felipe
    		Panczner(1987):219 & 366.
    USA
     
    • Alabama
    		Gems and Minerals of America-Jay Ellis Ransom-1974
    Gems and Minerals of America- Jay Ellis Ransom-1974
    • Arizona
      • Santa Cruz Co.
        • Patagonia Mts
          • Harshaw District
            • Alum Gulch
              • Blue Eagle and Exposed Reef group
    		Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 258.
    Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 257.
              • Flux Gulch
    		Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 59 (Table 4);
          • Palmetto District
            • Cox Gulch
    		Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 292.
            • Three-R Canyon
              • Three-R Mine group
    		Schrader & Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, AZ, USGS Bull. 582: 284.
        • Santa Rita Mts
          • Wrightson District
            • Temporal Gulch
    		Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 237.
    • Georgia
      • Bartow Co.
        • Emerson
    		Minerals of Georgia: Their properties and occurrences GGWRD Bull 92
    Minerals of Georgia: Their properties and occurrences GGWRD Bull 92
    • Maryland
      • Anne Arundel Co.
        • Arnold
          • Magothy River
    		Ref: Minerals of the Washington, D.C Area.
    • Massachusetts
      • Dukes Co.
    • Nevada
      • Clark Co.
    		NBMG Bull 62 Geology and Mineral Deposits of Clark County, Nevada
    • New Mexico
    		NMBMMR Bull 81 Summary of the Mineral Resources of Bernalillo, Sandoval, and Santa Fe Counties, New Mexico
      • Union Co.
    		USGS Prof Paper 68 The Ore Deposits of New Mexico
    • North Carolina
    		Gems and Minerals of America-Jay Ellis Ransom-1974
    Hash and Van Horn,1951,Sillimanite Deposits of North Carolina,NCGS Bulletin #61
    • Tennessee
      • Polk Co.
    		www.gamineral.org
    • Utah
      • Piute Co.
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Vermont
      • Windham Co.
    		Morrill & Chaffee, 1957. VT Mines & Mineral Localities.
    Child, 1884: Gazetteer and Business Directory of Windham Co., Vermont
    • Washington
      • Yakima Co.
        • Mount Adams
    		Huntting, M. (1956): Inventory of Washington Minerals, Part I, Nonmetallic Minerals, Vol. 1, p.134; Cannon, B. (1975): Minerals of Washington, p.40, 60, 63, 120, 166
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 8th Nov 2009 08:37:14