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Kryachkoite

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Valery Kryachko
Formula:
(Al,Cu)6(Fe,Cu)
Crystal System:
Orthorhombic
Name:
Named by C. Ma, C. Lin, L. Luca Bindi, and P.J. Steinhardt in 2017 in honor of Valery Kryachko, Russian prospector who discovered the original samples of the Khatyrka meteorite in 1979.
Chemically similar to hollisterite and somewhat to icosahedrite. Known synthetic analogue.


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Classification of KryachkoiteHide

Approved
Approval Year:
2016
First Published:
2017

Chemical Properties of KryachkoiteHide

Formula:
(Al,Cu)6(Fe,Cu)

Crystallography of KryachkoiteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Cmc21
Cell Parameters:
a = 7.460 Å, b = 6.434 Å, c = 8.777 Å
Ratio:
a:b:c = 1.159 : 1 : 1.364
Unit Cell V:
421.3 ų
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.872(38)
2.242(61)
2.164(35)
2.130(87)
2.061(46)
2.051(100)
2.007(32)
2.001(62)

Occurrences of KryachkoiteHide

Paragenetic Mode(s):
•  Chondrite

Type Occurrence of KryachkoiteHide

Place of Conservation of Type Material:
Mineralogical collections of the the Smithsonian Institution’s National Museum of Natural History, Washington DC, USA (registration number USNM 7908)
Associated Minerals at Type Locality:

Synonyms of KryachkoiteHide

Other InformationHide

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

References for KryachkoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ma, C., Lin, C., Bindi, L., Steinhardt, P.J. (2016) Kryachkoite, IMA 2016-062. CNMNC Newsletter No. 33, October 2016, page 1142. Mineralogical Magazine: 80: 1135–1144.
Ma, C., Lin, C., Luca Bindi, L., Steinhardt, P.J. (2017) Hollisterite (Al3Fe), kryachkoite (Al,Cu)6(Fe,Cu), and stolperite (AlCu): Three new minerals from the Khatyrka CV3 carbonaceous chondrite. American Mineralogist: 102:, 690-693.

Internet Links for KryachkoiteHide

Localities for KryachkoiteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Far-Eastern Region
    • Koriak Autonomous Okrug
      • Koryak Upland (Koriak; Koriakskhiye)
        • Iomrautvaam Massif
          • Chetkinvaiam tectonic melange
            • Khatyrka river
              • Listvenitovyi stream
Ma, C., Lin, C., Bindi, L., Steinhardt, P.J. (2016): Kryachkoite, IMA 2016-062. CNMNC Newsletter No. 33, October 2016, page 1142; Mineralogical Magazine: 80: 1135–1144; Ma, C., Lin, C., Luca Bindi, L., Steinhardt, P.J. (2017): Hollisterite (Al3Fe), kryachkoite (Al,Cu)6(Fe,Cu), and stolperite (AlCu): Three new minerals from the Khatyrka CV3 carbonaceous chondrite. American Mineralogist, 102, 690-693
Mineral and/or Locality  
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