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Fe23+(SO4)3 · 5H2O
White; colourless in ...
Named by Gurdon Montague Butler in 1928 in honor of Carl B. Lausen, Mining Engineer, United Verde Mining Company, Arizona, who first discovered the mineral.
May actually be a pentahydrate instead of a hexahydrate.

The only "natural" occurrences of this species are mine fires; therefore, by the current rules, it would not be eligible for consideration as a species in view of its anthropogenic origin.

Classification of Lausenite

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

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

8 : A2(XO4)3·H2O

25 : Sulphates
10 : Sulphates of Fe alone

Physical Properties of Lausenite

Diaphaneity (Transparency):
White; colourless in transmitted light.
2.49 g/cm3 (Calculated)

Optical Data of Lausenite

Biaxial (-)
RI values:
nα = 1.548 - 1.598 nβ = 1.628(5) nγ = 1.600 - 1.654
Max Birefringence:
δ = 0.052 - 0.056
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
r < v weak

Chemical Properties of Lausenite

IMA Formula:
Fe23+(SO4)3 · 5H2O Formula:

Formerly thought to be Fe2(SO4)3·6H2O.
Elements listed in formula:

Crystallography of Lausenite

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 10.679(2) Å, b = 11.053(3) Å, c = 5.567(1) Å
β = 98.89(1)°
a:b:c = 0.966 : 1 : 0.504
Unit Cell Volume:
V 654 ų
Lumpy aggregates of minute fibers. Fibers elongated parallel to c.
Data for type specimen. Synthetic material gives similar values.

Type Occurrence of Lausenite

Place of Conservation of Type Material:
University of Arizona, Tucson and Harvard University, Massachusetts.
Geological Setting of Type Material:
Burning pyritic ore body.
Empirical Formula:
Fe23+(SO4)3 · 6H2O

Relationship of Lausenite to other Species

7.CB.05DwornikiteNiSO4 · H2O
7.CB.05GunningiteZnSO4 · H2O
7.CB.05KieseriteMgSO4 · H2O
7.CB.05PoiteviniteCuSO4 · H2O
7.CB.05SzmikiteMn2+SO4 · H2O
7.CB.05SzomolnokiteFe2+SO4 · H2O
7.CB.05CobaltkieseriteCoSO4 · H2O
7.CB.07SanderiteMgSO4 · 2H2O
7.CB.10BonattiteCuSO4 · 3H2O
7.CB.15AplowiteCoSO4 · 4H2O
7.CB.15BoyleiteZnSO4 · 4H2O
7.CB.15IlesiteMn2+SO4 · 4H2O
7.CB.15RozeniteFe2+SO4 · 4H2O
7.CB.15StarkeyiteMgSO4 · 4H2O
7.CB.15DrobeciteCdSO4 · 4H2O
7.CB.15CranswickiteMgSO4 · 4H2O
7.CB.20ChalcanthiteCuSO4 · 5H2O
7.CB.20JôkokuiteMn2+SO4 · 5H2O
7.CB.20PentahydriteMgSO4 · 5H2O
7.CB.20Siderotil(Fe,Cu)SO4 · 5H2O
7.CB.25BianchiteZnSO4 · 6H2O
7.CB.25ChvaleticeiteMnSO4 · 6H2O
7.CB.25FerrohexahydriteFe2+SO4 · 6H2O
7.CB.25HexahydriteMgSO4 · 6H2O
7.CB.25MoorhouseiteCoSO4 · 6H2O
7.CB.25NickelhexahydriteNiSO4 · 6H2O
7.CB.30RetgersiteNiSO4 · 6H2O
7.CB.35BieberiteCoSO4 · 7H2O
7.CB.35BoothiteCuSO4 · 7H2O
7.CB.35MallarditeMn 2+SO4 · 7H2O
7.CB.35MelanteriteFe2+SO4 · 7H2O
7.CB.35ZincmelanteriteZnSO4 · 7H2O
7.CB.35Alpersite(Mg,Cu2+)SO4 · 7H2O
7.CB.40EpsomiteMgSO4 · 7H2O
7.CB.40GoslariteZnSO4 · 7H2O
7.CB.40MorenositeNiSO4 · 7H2O
7.CB.45AlunogenAl2(SO4)3(H2O)12 · 5H2O
7.CB.45Meta-alunogenAl2(SO4)3 · 14H2O
7.CB.50AluminocoquimbiteAlFe(SO4)3 · 9H2O
7.CB.55CoquimbiteFe23+(SO4)3 · 9H2O
7.CB.55ParacoquimbiteFe23+(SO4)3 · 9H2O
7.CB.55Rhomboclase(H3O)Fe3+(SO4)2 · 3H2O
7.CB.60KorneliteFe23+(SO4)3 · 7H2O
7.CB.65QuenstedtiteFe23+(SO4)3 · 11H2O
7.CB.75LishizheniteZnFe23+(SO4)4 · 14H2O
7.CB.75RömeriteFe2+Fe23+(SO4)4 · 14H2O
7.CB.80RansomiteCuFe23+(SO4)4 · 6H2O
7.CB.85ApjohniteMn2+Al2(SO4)4 · 22H2O
7.CB.85BíliniteFe2+Fe23+(SO4)4 · 22H2O
7.CB.85DietrichiteZnAl2(SO4)4 · 22H2O
7.CB.85HalotrichiteFe2+Al2(SO4)4 · 22H2O
7.CB.85PickeringiteMgAl2(SO4)4 · 22H2O
7.CB.85RedingtoniteFe2+Cr2(SO4)4 · 22H2O
7.CB.85WupatkiiteCoAl2(SO4)4 · 22H2O
7.CB.90MeridianiiteMgSO4 · 11H2O
25.10.1SzomolnokiteFe2+SO4 · H2O
25.10.2RozeniteFe2+SO4 · 4H2O
25.10.3Siderotil(Fe,Cu)SO4 · 5H2O
25.10.4FerrohexahydriteFe2+SO4 · 6H2O
25.10.5MelanteriteFe2+SO4 · 7H2O
25.10.6Rhomboclase(H3O)Fe3+(SO4)2 · 3H2O
25.10.8KorneliteFe23+(SO4)3 · 7H2O
25.10.9CoquimbiteFe23+(SO4)3 · 9H2O
25.10.10ParacoquimbiteFe23+(SO4)3 · 9H2O
25.10.11QuenstedtiteFe23+(SO4)3 · 11H2O
25.10.12FerricopiapiteFe3+0.67Fe43+(SO4)6(OH)2 · 20H2O
25.10.13MetahohmanniteFe23+O(SO4)2 · 4H2O
25.10.14HohmanniteFe23+O(SO4)2 · 8H2O
25.10.15ButleriteFe3+SO4(OH) · 2H2O
25.10.16ParabutleriteFe3+SO4(OH) · 2H2O
25.10.17AmarantiteFe23+O(SO4)2 · 7H2O
25.10.18FibroferriteFe3+SO4(OH) · 5H2O
25.10.20RömeriteFe2+Fe23+(SO4)4 · 14H2O
25.10.21BíliniteFe2+Fe23+(SO4)4 · 22H2O
25.10.22CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O

Other Names for Lausenite

Name in Other Languages:

Other Information

Other Information:
May be 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 Lausenite

Reference List:
Posnjak and Merwin (1922) American Chemical Society Journal: 44: 1965 (artif. compound).

Butler (1928) American Mineralogist: 13: 594.

Lausen (1928) American Mineralogist: 13: 203 (as Rogersite).

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.: 530.

Tschermaks Mineralogische und Petrographische Mitteilungen (1974): 21: 216.

Srebrodol’skii, B.I. (1974): Lausenite, first find in the USSR. Doklady Acad. Nauk SSSR, 219, 441–442 (in Russian).

Majzlan, J., Botez, C., Stephens, P. W. (2005): The crystal structures of synthetic Fe2(SO4)3(H2O)5 and the type specimen of lausenite. American Mineralogist, 90, 411-416.

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

Localities for Lausenite

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.
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
  • L'viv Oblast' (Lviv Oblast'; Lwiw Oblast')
    • L'viv-Volynskii Coal Basin (L'vov-Volynskii Coal Basin)
      • Chervonograd
Srebrodol’skii, B.I. (1974): Lausenite, first find in the USSR. Doklady Acad. Nauk SSSR, 219, 441–442 (in Russian).; Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
  • Arizona
    • Yavapai Co.
      • Black Hills (Black Hill Range)
        • Verde District
          • Jerome
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: 530; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 272; Lausen, C. (1928), Hydrous sulphates formed under fumerolic conditions at the United Verde mine, American Mineralogist: 13: 203-229; Butler, G.M. (1928), Corrections to Volume 13, American Mineralogist: 13: 594; Galbraith, F.W. & Brennan (1959), Minerals of Arizona: 62.
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