Yurgensonite (original) (raw)

A valid IMA mineral species

About YurgensoniteHide

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Colour:

Colourless, white, pale beige

Specific Gravity:

3.877 (Calculated)

Crystal System:

Orthorhombic

Name:

Named in honour of Georgiy Aleksandrovich Yurgenson (Георгий Александрович Юргенсон) (b. 16 October 1935, Kurovitsy, Leningrad region, Russia), Russian mineralogist, geochemist and specialist in studies of ore deposits at the Institute of Natural Resources, Ecology and Cryology of the Siberian Branch of the Russian Academy of Sciences, Chita, Russia.

The Sn-Ti-ordered analogue of katiarsite. Probably unique in terms of Sn-Ti separation into two independent sites.

Unique combination of elements. First natural tin arsenate to date.

The M(2)O6 octahedron has Sn4+ prevailing, while the M(1) site has Ti4+ as the major cation.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:53854:5

9664ef17-8f3e-4a36-949d-9c8c2cf78817

IMA Classification of YurgensoniteHide

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Classification of YurgensoniteHide

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8.BH.70

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

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 YurgensoniteHide

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Colour:

Colourless, white, pale beige

Hardness Data:

Could not be measured

Fracture:

Irregular/Uneven

Density:

3.877 g/cm3 (Calculated)

Optical Data of YurgensoniteHide

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RI values:

_n_α = 1.764(6) _n_β = 1.780(6) _n_γ = 1.792(6)

2V:

Measured: ~90° , Calculated: 81°

δ = 0.028

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

Dispersion:

Distinct, r < v

Comments:

Optical orientation: X=b, Y=a and Z=c

Chemistry of YurgensoniteHide

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Mindat Formula:

K2SnTiO2(AsO4)2

Crystallography of YurgensoniteHide

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Crystal System:

Orthorhombic

Class (H-M):

m _m_2 - Pyramidal

Cell Parameters:

a = 13.2681(6) Å, b = 6.6209(3) Å, c = 10.8113(5) Å

Ratio:

a:b:c = 2.004 : 1 : 1.633

Morphology:

Elongated along [010]. Sword-shaped crystals are flattened on [100] with other major forms {100}, {001} (prismatic zone) and {011} (terminations). Also acicular to hair-like.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of YurgensoniteHide

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General Appearance of Type Material:

Sword-shaped crystals up to 0.01×0.05×1 mm or acicular to hair-like individuals up to 1 mm long, typically forming radial aggregates up to 2 mm across.

Place of Conservation of Type Material:

collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5419/1.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of YurgensoniteHide

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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 YurgensoniteHide

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References for YurgensoniteHide

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Reference List:

Pekov, Igor V., Zubkova, Natalia V., Agakhanov, Atali A., Yapaskurt, Vasiliy O., Belakovskiy, Dmitry I., Vigasina, Marina F., Britvin, Sergey N., Turchkova, Anna G., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2021) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. XVI. Yurgensonite, K2SnTiO2(AsO4)2, the first natural tin arsenate, and the katiarsite–yurgensonite isomorphous series. Mineralogical Magazine, 85 (5) 698-707 doi:10.1180/mgm.2021.47

Localities for YurgensoniteHide

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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.