Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Mendozite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
NaAl(SO4)2 · 11H2O
System:
Monoclinic
Colour:
Colourless (turns white ...
Hardness:
3
Name:
After the supposed type locality of St. Juan near Mendoza, Argentina.
Closely related to the members of the Alum Group.

Classification of Mendozite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
7.CC.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
29.5.4.1

29 : HYDRATED ACID AND NORMAL SULFATES
5 : AB(XO4)2·xH2O
25.6.13

25 : Sulphates
6 : Sulphates of Al and Tl
mindat.org URL:
http://www.mindat.org/min-2643.html
Please feel free to link to this page.

First Recorded Occurrence of Mendozite

Year of Discovery:
1868

Physical Properties of Mendozite

Diaphaneity (Transparency):
Transparent
Colour:
Colourless (turns white upon exposure); colourless in transmitted light.
Hardness (Mohs):
3
Cleavage:
Distinct/Good
{100}, good; {001} and {010}, indistinct.

Crystallography of Mendozite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 21.75Å, b = 9.1Å, c = 8.29Å
β = 92.47°
Ratio:
a:b:c = 2.39 : 1 : 0.911
Unit Cell Volume:
V 1,639.27 ų (Calculated from Unit Cell)
Morphology:
Artificial crystals are prismatic [001] with large {100}; also pseudo-rhombohedral with {100} and {_211}. Fibrous masses.

Optical Data of Mendozite

Type:
Biaxial (-)
RI values:
nα = 1.449 nβ = 1.461 nγ = 1.463
2V:
Measured: 56° , Calculated: 44°
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v distinct

Chemical Properties of Mendozite

Formula:
NaAl(SO4)2 · 11H2O
Essential elements:
All elements listed in formula:
Analytical Data:
Soluble in water. Dehydrates and alters to white tamarugite.

Relationship of Mendozite to other Species

7.CC.05KrausiteKFe(SO4)2 · H2O
7.CC.10TamarugiteNaAl(SO4)2 · 6H2O
7.CC.15KaliniteKAl(SO4)2 · 11H2O Not confirmed
7.CC.20Lonecreekite(NH4)Fe3+(SO4)2 · 12H2O
7.CC.20Alum-(K)KAl(SO4)2 · 12H2O
7.CC.20Alum-(Na)NaAl(SO4)2 · 12H2O
7.CC.20Tschermigite(NH4)Al(SO4)2 · 12H2O
7.CC.20LanmuchangiteTl+Al(SO4)2 · 12H2O
7.CC.25VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
7.CC.25ZincovoltaiteK2Zn5Fe33+Al(SO4)12 · 18H2O
7.CC.25PertlikiteK2(Fe2+,Mg)2Mg4Fe23+Al(SO4)12 · 18H2O
7.CC.25Ammoniomagnesiovoltaite(NH4)2Mg52+Fe33+Al(SO4)12 · 18H2O
7.CC.30KröhnkiteNa2Cu(SO4)2 · 2H2O
7.CC.35FerrinatriteNa3Fe(SO4)3 · 3H2O
7.CC.40GoldichiteKFe(SO4)2 · 4H2O
7.CC.45LöweiteNa12Mg7(SO4)13 · 15H2O
7.CC.50BlöditeNa2Mg(SO4)2 · 4H2O
7.CC.50NickelblöditeNa2(Ni,Mg)(SO4)2 · 4H2O
7.CC.50ChangoiteNa2Zn(SO4)2 · 4H2O
7.CC.50Zincblödite
7.CC.55LeoniteK2Mg(SO4)2 · 4H2O
7.CC.55MereiteriteK2Fe(SO4)2 · 4H2O
7.CC.60Boussingaultite(NH4)2Mg(SO4)2 · 6H2O
7.CC.60CyanochroiteK2Cu(SO4)2 · 6H2O
7.CC.60Mohrite(NH4)2Fe(SO4)2 · 6H2O
7.CC.60Nickelboussingaultite(NH4)2Ni(SO4)2 · 6H2O
7.CC.60PicromeriteK2Mg(SO4)2 · 6H2O
7.CC.65PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
7.CC.70LeightoniteK2Ca2Cu(SO4)4 · 2H2O
7.CC.75AmarilliteNaFe(SO4)2 · 6H2O
7.CC.80KonyaiteNa2Mg(SO4)2 · 5H2O
7.CC.85WattevilleiteNa2Ca(SO4)2 · 4H2O (?)
25.6.1RostiteAl(SO4)(OH) · 5H2O
25.6.2JurbaniteAl(SO4)(OH) · 5H2O
25.6.3KhademiteAl(SO4)F · 5H2O
25.6.4Meta-aluminiteAl2(SO4)(OH)4 · 5H2O
25.6.5AluminiteAl2(SO4)(OH)4 · 7H2O
25.6.6Meta-alunogenAl2(SO4)3 · 12H2O
25.6.7AlunogenAl2(SO4)3 · 17H2O
25.6.8FelsőbányaiteAl4(SO4)(OH)10 · 4H2O
25.6.9Basaluminite
25.6.10HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2O
25.6.11ZaheriteAl12(SO4)5(OH)26 · 20H2O
25.6.12TamarugiteNaAl(SO4)2 · 6H2O
25.6.14Alum-(Na)NaAl(SO4)2 · 12H2O
25.6.15NatroaluniteNaAl3(SO4)2(OH)6
25.6.16KaliniteKAl(SO4)2 · 11H2O Not confirmed
25.6.17Alum-(K)KAl(SO4)2 · 12H2O
25.6.18AluniteKAl3(SO4)2(OH)6
25.6.19Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
25.6.20Tschermigite(NH4)Al(SO4)2 · 12H2O

Other Names for Mendozite

Name in Other Languages:

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 Mendozite

Reference List:
Thomson (1828) Annals Lyceum Natural History, New York: 3: 19 (as native Soda-Alum).

Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York.: 653.

Divers (1881) Chemical News and Journal of Industrial Science, London: 44: 218.

Soret (1884) Arch. sc. phys. nat. Genève: 11: 63.

Surganov (1909) Academy of Sciences St. Petersburg, Bull.: 3: 1057.

Keller (1935) American Mineralogist: 20: 537.

Bandy (1938) American Mineralogist: 23: 722.

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.: 469.

Fang, J.H. and P.D. Robinson (1972): Crystal structures and mineral chemistry of double-salt hydrates: II. The crystal structure of mendozite, NaAl(SO4)2 •11H2O. Amer. Mineral., 37, 1082–1088.

Internet Links for Mendozite

Localities for Mendozite

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.
Argentina
 
  • Mendoza
Am Min 57:1081 (1972)
  • San Juan
    • Iglesia Department
Angelelli, V., Brodtkorb, M.K. de, Gordillo, C.E. y Gay, H.D. (1983). Las Especies Minerales de la República Argentina. Subsecretaría de Minería. Publicación Especial. 528 pp.
Canada
 
  • British Columbia
    • Kamloops Mining Division
Schmetzer, K. & Medenbach, O. (1983): Challantite from Cache Creek, British Columbia, Canada - a second occurrence. Neues Jahrbuch für Mineralogie, Monatshefte 1983, 158-162.
Chile
 
  • Antofagasta Region
    • El Loa Province
      • Calama
        • Chuquicamata District
R.B. Cook: "Famous mineal locality; Chuquicamata, Chile": Mineralogical Record, sept.-oct. 1973
  • Tarapacá Region
    • El Tamarugal Province
      • Pampa del Tamarugal
Peter G. Seroka collection
Germany
 
  • North Rhine-Westphalia
    • Ruhr Coal Mining area
      • Herne
Weiss: "Mineralfundstellen, Deutschland West", 1990
Hungary
 
  • Heves Co.
    • Mátra Mts
      • Recsk
ACTA MIN. PETR. Suppl. Tomus XXXVIII., 1997
Szakáll & Jánosi: Minerals of Hungary, 1995
Italy
 
  • Campania
    • Phlegrean Volcanic Complex
      • Naples Province
        • Phlegrean Fields
          • Pozzuoli
http://70.1911encyclopedia.org/V/VO/VOLCANO.htm.
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
PANICHI U. (1924): Contributo allo studio dei minerali dell'Isola di Vulcano. - Memorie della Società Italiana delle Scienze (detta dei XL) - serie 3 - 19, 3-55.
            • Porto Levante
P.Forti, M.Panzica La Manna and A.Rossi (1994) The peculiar mineralogic site of the Alum cave (Vulcano, Sicily). Proceedings of the 7th International Symposium on Vulcanospeleology November 1994 p.35-44.
New Zealand
 
  • North Island
    • Manawatu-Wanganui
      • Tongariro National Park
Johnstone, R. D. 1979, Fumarole Incrustations and Some Aspects of the Thermal Alteration at Ketetahi, Mount Tongariro, New Zealand. Geothermal Institute, University of Auckland, New Zealand
Norway
 
  • Oppland
    • Ringebu
      • Fåvang
Broch, O.A. (1931): Pickeringite from Fåvang. Norsk Geologisk Tidsskrift. 12: 117-121
    • Valdres
Selbekk, R. S., Husdal, T. A. & Berg, H-J. (2010): Nye mineraler for Norge i 2010. Stein. 37 (4): 24-26
Senegal
 
  • Ziguinchor Region
Montoroi, J. P. (1995) Mise eli évidence d'une séquence de précipitation des sels dails les sols sulfatés acides d'une vallée aménagée de Basse-Casamance (Sénégal). C.R. Acad. Sci. Paris, t. 320, série II a, p. 395-402
Slovakia
 
  • Banská Bystrica Region
    • Žiar nad Hronom Co.
Ďuďa R., 1993 : Die mineralien der Gold und Silber - lagersttäte von Kremnitz ( Kremnica) in der Slowakei. Mineralien Welt /Haltern,Nemecko/,5, s. 20 - 32
USA
 
  • California
    • Amador Co.
      • Volcano District
        • Volcano
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 257, 259.
    • Napa Co.
      • Yountville
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 259.
    • San Bernardino Co.
      • Hidden Springs
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 259.
  • Colorado
    • Eagle Co.
      • Gilman District (Battle Mountain District; Red Cliff District)
Minerals of Colorado (1997) E.B. Eckels
  • Georgia
    • Rabun Co.
Minerals of Georgia: Their properties and occurrences. Robert Cook GGWRD Bull 92
AmMin. 20:229
    • Callaway Co.
      • Fulton
Rocks & Min., March 1998.
    • St. Louis Co.
R&M 73:2 pp 98-117
  • Nevada
    • Esmeralda Co.
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Mexico
    • Guadalupe Co.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    • Torrance Co.
Minerals of New Mexico 3rd ed.
  • Virginia
    • Chesterfield Co.
Minerals of Virginia 1990 by R. V. Dietrich
  • Washington
    • Yakima Co.
      • Mount Adams
Cannon, B. (1975): Minerals of Washington, p.120
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: April 26, 2015 07:25:21 Page generated: April 26, 2015 02:48:21