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Fe(TeO4) (?)
Named in 1877 by Frederick Genth for the chemical composition: "Composition probably FeTeO4; the small quantity in hand did not allow of a reliable analysis." Recent search for a valid ferrotellurite specimen was unsuccessful. A "ferrotellurite" specimen with Frederick Genth's label proved to be the new species keystoneite.
"... under the microscope it appears as very delicate tufts of straw-yellow to lemon yellow crystals, inclining to greenish-yellow."

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Classification of FerrotelluriteHide

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

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

Chemical Properties of FerrotelluriteHide

Fe(TeO4) (?)
IMA Formula:
Fe(Te6+O4) (?)

Type Occurrence of FerrotelluriteHide

Other Language Names for FerrotelluriteHide

Simplified Chinese:铁黄碲矿

Related Minerals - Nickel-Strunz GroupingHide

7.AB.DravertiteCuMg(SO4)2Mon. 2/m
7.AB.05MikasaiteFe2(SO4)3Trig. 3 : R3
7.AB.05Millosevichite(Al,Fe)2(SO4)3Trig. 3 : R3
7.AB.10ChalcocyaniteCuSO4Orth. mmm (2/m 2/m 2/m)

Other InformationHide

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 FerrotelluriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Genth, Frederick A. (1877) On Some Tellurium and Vandium Minerals, American Journal of Science, series 3, v. 14, p. 423-424.
Genth, Frederick A. Ueber einige Tellur- und Vanad-Mineralien, Zeitschrift fur Krystallographie und Mineralogie,v. 2, part 1, p. 1-13.
Dana, Edward S. and Wells, Horace L. (1890) On Some Selenium and Tellurium Minerals from Honduras, American Journal of Science, series 3, v. 40, p. 78-81.
Hillebrand, W. F. (1890) Note on Emmonsite [Durdenite], American Journal of Science, series 3, v. 40, p. 81-82.
Dana E. S. (1892) System of Mineralogy, 6th edition, 980

Internet Links for FerrotelluriteHide

Localities for FerrotelluriteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Colorado
    • Boulder Co.
      • Magnolia District
Heys Mineral Index 3rd ed.
Mineral and/or Locality  
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