Örebroite (original) (raw)

A valid IMA mineral species

About ÖrebroiteHide

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Formula:

Mn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3

Colour:

dark brown, red brown

Specific Gravity:

4.77 (Calculated)

Name:

Named by Pete J. Dunn, Donald R. Peacor, Richard C. Erd, and Robert A. Ramik in 1986 for the city of Örebro, Sweden, 60 km southeast of the type locality of Sjö Mine.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3054:6

b857e36a-ea98-491e-97e2-de4f21fb0757

IMA Classification of ÖrebroiteHide

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IMA Formula:

Mn2+6(Sb5+Fe3+)(SiO4)2O6

Type description reference:

Dunn, Pete J., Peacor, Donald R., Erd, Richard C., Ramik, Robert A. (1986) Franciscanite and örebroite, two new minerals from California and Sweden, related to redefined welinite. American Mineralogist, 71 (11-12). 1522-1526

Classification of ÖrebroiteHide

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9.AF.75

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination

52.4.1.1

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination

14.18.40

14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of ÖrebroiteHide

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Colour:

Dark brown, red brown

Fracture:

Irregular/Uneven

Density:

4.77 g/cm3 (Calculated)

Optical Data of ÖrebroiteHide

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RI values:

_n_ω = 1.857(3) _n_ε = 1.875(3)

δ = 0.018

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of ÖrebroiteHide

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Mindat Formula:

Mn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3

Crystallography of ÖrebroiteHide

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Class (H-M):

3 - Pyramidal

Cell Parameters:

a = 8.183(7) Å, c = 4.756(9) Å

Unit Cell V:

275.80 ų (Calculated from Unit Cell)

Morphology:

fine-grained, polycrystalline intergrowths and massive

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of ÖrebroiteHide

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General Appearance of Type Material:

Massive and polycrystalline

Place of Conservation of Type Material:

Swedish Museum of Natural History, Stockholm, Sweden, RM. 93:0255.
National Museum of Natural History, Washington, D.C., USA, 163008.

Associated Minerals at Type Locality:

Reference:

Dunn, P. J., Peacor, D. R., Erd, R. C., & Ramik, R. A. (1986). Franciscanite and ürebroite, two new minerals from California and Sweden, related to redefined welinite. American Mineralogist, 71(11-12), 1522-1526.

Synonyms of ÖrebroiteHide

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Other Language Names for ÖrebroiteHide

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Relationship of Örebroite to other SpeciesHide

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Other Members of this group:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Notes:

Weakly magnetic, but thought to be inclusions of magnetite and not the Örebroite itself.

Health Risks:

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

Internet Links for ÖrebroiteHide

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References for ÖrebroiteHide

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Reference List:

Dunn, Pete J., Peacor, Donald R., Erd, Richard C., Ramik, Robert A. (1986) Franciscanite and örebroite, two new minerals from California and Sweden, related to redefined welinite. American Mineralogist, 71 (11-12). 1522-1526

Localities for ÖrebroiteHide

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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

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.