Åskagenite-(Nd) (original) (raw)

A valid IMA mineral species

About Åskagenite-(Nd)Hide

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Formula:

(Mn2+Nd)(AlAlFe3+)O[Si2O7][SiO4]O

Crystal System:

Monoclinic

Name:

Named in 2010 by Nikita V. Chukanov, Jörg Göttlicher, Steffen Möckel, Zdnek Sofer, Konstantin V. Van, and Dmetry I. Belakovskiy for the type locality at Åskagen (Torskebäcken), Filipstad, Värmland, Sweden.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:39790:2

3ce0f4d8-7795-4d7b-b286-14692e9a2827

IMA Classification of Åskagenite-(Nd)Hide

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IMA Formula:

Mn2+Nd(Al2Fe3+)[Si2O7][SiO4]O2

Classification of Åskagenite-(Nd)Hide

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9.BG.05b

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

58.2.9.5

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)

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 Åskagenite-(Nd)Hide

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Comment:

Brown in translucent thin fragments

Density:

3.737(5) g/cm3 (Measured) 4.375 g/cm3 (Calculated)

Comment:

Measured density for a metamict sample.

Optical Data of Åskagenite-(Nd)Hide

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Birefringence:

Isotropic minerals have no birefringence

Chemistry of Åskagenite-(Nd)Hide

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Mindat Formula:

(Mn2+Nd)(AlAlFe3+)O[Si2O7][SiO4]O

Crystallography of Åskagenite-(Nd)Hide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 8.78 (1) Å, b = 5.710(6) Å, c = 10.02(1) Å
β = 114.6(2)°

Ratio:

a:b:c = 1.538 : 1 : 1.755

Comment:

Metamict; crystallographic data for heated material.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

After heating in a nitrogen atmosphere; sample from the type locality.

Geological EnvironmentHide

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Type Occurrence of Åskagenite-(Nd)Hide

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General Appearance of Type Material:

Coarse prismatic, sometimes flattened crystals with rectangular outlines up to 1 × 4 cm in size.

Place of Conservation of Type Material:

Mining Academy, Freiberg, Germany (82194, 82218); Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia (92949).

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Synonyms of Åskagenite-(Nd)Hide

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Relationship of Åskagenite-(Nd) to other SpeciesHide

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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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Notes:

The mineral is slightly radioactive.

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 Åskagenite-(Nd)Hide

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References for Åskagenite-(Nd)Hide

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Reference List:

Chukanov, N.V., Göttlicher, J., Möckel, S., Sofer, Z., Van, K.V. & Belakovskiy, D.I. (2010): Åskagenite-(Nd) Mn2+NdAl2Fe3+(Si2O7)(SiO4)O2, a new mineral of the epidote supergroup. Novye dannye o mineralakh, 45, 17–22 (in Russian). New data on minerals, 45, 17–22 (in English).

Localities for Åskagenite-(Nd)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.