Yafsoanite (original) (raw)

Colour:

Light to dark brown, colorless

Specific Gravity:

5.40 - 5.55

Name:

From Russian YAFSOAN, an acronym for the Yakut Filial, Siberian Branch, Academy of Science, Yakutiya, Russia.

Long-form identifier:

mindat:1:1:4349:2

1cac2745-3472-489b-bb9d-7a3205a4d7a1

4.CC.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations

7.2.14.1

7 : MULTIPLE OXIDES
2 : AB2X4

28.4.3

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates

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

Transparency:

Transparent, Translucent

Colour:

Light to dark brown, colorless

Hardness:

VHN30=696 kg/mm2 - Vickers

Density:

5.40 - 5.55 g/cm3 (Measured) 5.441 g/cm3 (Calculated)

Birefringence:

Isotropic minerals have no birefringence

Mindat Formula:

Ca3Te6+2(ZnO4)3

Class (H-M):

m_3_m _(_4/_m_32/m ) - Hexoctahedral

Cell Parameters:

a = 12.6350(7) Å

Morphology:

cube, octahedron, and rhombododecahedron

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CIF Raw Data - click here to close

General Appearance of Type Material:

Intergrowths, single crystals (0.1-0.5 mm), and as radiating-concentric material.

Place of Conservation of Type Material:

1. Fersman Mineralogical Museum, Acad. Sci., Moscow, Russia
2. Inst. of Geology, Yakut Filial, Siberian Branch, Acad. Sci. Russia.

Associated Minerals at Type Locality:

Reference:

Kim, A.A., Zayakina, N.V., Lavrent'yev, Y.G. (1982) Yafsoanite, (Zn1.38Ca1.36Pb0.26)3TeO6, a new tellurium mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 111(1): 118-121.

Other Members of this group:

Associated Minerals Based on Photo Data:

Notes:

Dissolved by acids, not reactive with KOH or FeCl2

Health Risks:

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

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.

- 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.