Vanadoandrosite-(Ce) (original) (raw)

A valid IMA mineral species

Formula:

(Mn2+Ce)(V3+AlMn2+)O[Si2O7][SiO4](OH)

Colour:

Very dark brown to black

Lustre:

Adamantine, Vitreous

Specific Gravity:

4.27 (Calculated)

Crystal System:

Monoclinic

Name:

Named according to the IMA nomenclature scheme for the epidote group, for its relationship to other 'androsite' species, the first one being manganiandrosite-(La). The root name is for Andros Island, Greece, where manganiandrosite-(La) was discovered. The prefix indicates a predominance of V3+ at the M1 site. The suffix/modifier indicates the dominant cation at the A2 site, which for the allanite subgroup is always a REE.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:27466:5

81da72b5-def8-4f97-a901-9a65726e6a5c

IMA Classification of Vanadoandrosite-(Ce)Hide

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IMA Formula:

MnCe(V3+AlMn2+)[Si2O7][SiO4]O(OH)

Classification of Vanadoandrosite-(Ce)Hide

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9.BG.05

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination

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 Vanadoandrosite-(Ce)Hide

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Colour:

Very dark brown to black

Comment:

Transparent in thin section only.

Density:

4.27 g/cm3 (Calculated)

Comment:

Calculated value based on the empirical formula.

Optical Data of Vanadoandrosite-(Ce)Hide

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δ = 0.000

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

Comments:

yellow-brown < red-brown < dark greenish brown // b

Comments:

α > l .74 (589 nm); the mean calculated refractive index is l.82 for the holotype composition.

Chemistry of Vanadoandrosite-(Ce)Hide

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Mindat Formula:

(Mn2+Ce)(V3+AlMn2+)O[Si2O7][SiO4](OH)

Crystallography of Vanadoandrosite-(Ce)Hide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 8.856 Å, b = 5.729 Å, c = 10.038 Å
β = 113.088°

Ratio:

a:b:c = 1.546 : 1 : 1.752

Crystal StructureHide

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X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Coustou Mine, France. Data from type description.

Geological EnvironmentHide

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Type Occurrence of Vanadoandrosite-(Ce)Hide

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General Appearance of Type Material:

Blackish, isolated stout prismatic grains, typically a few tens of μm in length, or radiating aggregates of the same size.

Place of Conservation of Type Material:

Mineral Museum, School of Mines, Paris, France, number 73952.

Geological Setting of Type Material:

Quartz-rhodochrosite-sulphide veinlets cross-cutting the rhodochrosite ore in greenschist-facies lower carboniferous radiolarite

Associated Minerals at Type Locality:

Synonyms of Vanadoandrosite-(Ce)Hide

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Other Language Names for Vanadoandrosite-(Ce)Hide

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Relationship of Vanadoandrosite-(Ce) 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:

Non-fluorescent under the electron beam.

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 Vanadoandrosite-(Ce)Hide

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References for Vanadoandrosite-(Ce)Hide

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Reference List:

Armbruster, Thomas, Bonazzi, Paola, Akasaka, Masahide, Bermanec, Vladimir, Chopin, Christian, Gieré, Reto, Heuss-Assbichler, Soraya, Liebscher, Axel, Menchetti, Silvio, Pan, Yuanming, Pasero, Marco (2006) Recommended nomenclature of epidote-group minerals. European Journal of Mineralogy, 18 (5) 551-567 doi:10.1127/0935-1221/2006/0018-0551

Cenki-Tok, Bénédicte, Ragu, Alain, Armbruster, Thomas, Chopin, Christian, Medenbach, Olaf (2006) New Mn- and rare-earth-rich epidote-group minerals in metacherts: manganiandrosite-(Ce) and vanadoandrosite-(Ce) European Journal of Mineralogy, 18 (5) 569-582 doi:10.1127/0935-1221/2006/0018-0569

Localities for Vanadoandrosite-(Ce)Hide

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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.