Fingerite (original) (raw)

A valid IMA mineral species

About FingeriteHide

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Specific Gravity:

4.776 (Calculated)

Name:

For Dr. Larry W. Finger (1940-), Geophysical Laboratory, Carnegie Institution of Washington

black grains up to 150 micrometers

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:1550:5

4cd89201-3070-4687-b27e-ea682e227f1a

IMA Classification of FingeriteHide

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Type description reference:

Classification of FingeriteHide

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8.BB.80

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1

41.11.3.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : Miscellaneous

21.1.11

21 : Vanadates (and vanadates with arsenate or phosphate)
1 : Vanadates of the alkalis and Cu

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.

Pronunciation of FingeriteHide

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Pronunciation:

Physical Properties of FingeriteHide

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Streak:

Dark reddish brown

Density:

4.776 g/cm3 (Calculated)

Optical Data of FingeriteHide

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Colour in reflected light:

medium gray

Comments:

reflectance of randomly oriented grains in blue-filtered white light in air is 21+-2%

Chemistry of FingeriteHide

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Mindat Formula:

Cu11(VO4)6O2

Crystallography of FingeriteHide

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Class (H-M):

1 - Pinacoidal

Cell Parameters:

a = 8.15 Å, b = 8.26 Å, c = 8.04 Å
α = 107.14°, β = 91.38°, γ = 106.44°

Ratio:

a:b:c = 0.987 : 1 : 0.973

Unit Cell V:

492.64 ų (Calculated from Unit Cell)

Morphology:

Plate like and equant crystals

Twinning:

180 degree rotation about [010]

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0000975	Fingerite	Finger L W (1985) Fingerite Cu11O2(VO4)6: a new vanadium sublimate from Izalco Volcano, El Salvador: crystal structure American Mineralogist 70 197-199		1985	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of FingeriteHide

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General Appearance of Type Material:

Place of Conservation of Type Material:

Carnegie Institution, Washington, D.C.; National Museum of Natural History, Washington, D.C., USA, 160387.

Geological Setting of Type Material:

Outer sulfate zone of fumarole "Y" indicating a sublimation temperature between 100 and 200 degrees C.

Associated Minerals at Type Locality:

Reference:

Hughes J M, Hadidiacos C G (1985) Fingerite, Cu11O2(VO4)6, a new vanadium sublimate from lzalco volcano, El Salvador: descriptive mineralogy. American Mineralogist 70, 193-196

Synonyms of FingeriteHide

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Other Language Names for FingeriteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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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 FingeriteHide

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References for FingeriteHide

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Localities for FingeriteHide

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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.