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Czochralskiite

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Jan Czochralski
Formula:
Na4Ca3Mg(PO4)4
Colour:
colorless
Lustre:
Vitreous
Hardness:
4 - 5
Specific Gravity:
3.148 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honour of Jan Czochralski (23 October 1885 – 22 April 1953), Polish chemist famous for inventing the Czochralski process by which single crystals (e.g., silicon, metals, synthetic gemstones) and semiconductor wafers are grown.
Glaserite-type structure, related to that of buchwaldite and brianite.


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Classification of CzochralskiiteHide

Approved
Approval Year:
2015
First Published:
2016

Pronounciation of CzochralskiiteHide

Pronounciation:
PlayRecorded byCountry
Łukasz KruszewskiPoland

Physical Properties of CzochralskiiteHide

Vitreous
Transparency:
Transparent
Colour:
colorless
Streak:
White
Hardness:
4 - 5 on Mohs scale
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Conchoidal
Density:
3.148 g/cm3 (Calculated)

Optical Data of CzochralskiiteHide

Type:
Biaxial (+)
RI values:
nα = 1.608(2) nβ = 1.611(2) nγ = 1.616(2)
2V:
Measured: 70° (10), Calculated: 76.7°
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very weak

Chemical Properties of CzochralskiiteHide

Formula:
Na4Ca3Mg(PO4)4

Crystallography of CzochralskiiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 17.9230(2) Å, b = 10.7280(2) Å, c = 6.7794(1) Å
Ratio:
a:b:c = 1.671 : 1 : 0.632
Unit Cell V:
1,303.53 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.811(50)
3.741(31)
2.735(100)
2.682(61)
2.610(83)
2.301(14)
2.249(17)1.906
Comments:
From Type Description.

Type Occurrence of CzochralskiiteHide

General Appearance of Type Material:
xenomorphic, usually oval grains and amoeboid aggregates, between 0.1 and 0.5 mm in size
Place of Conservation of Type Material:
Type material is deposited in the collections of the Mineralogical Museum of the University of Wrocław, Cybulskiego 30, 50-205 Wrocław, Poland, catalogue number MM UWr IV7870
Geological Setting of Type Material:
phosphate nodules rimmed with graphite in meteorite (primary phosphate)

Synonyms of CzochralskiiteHide

Fluorescence of CzochralskiiteHide

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 CzochralskiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Muszyński A. et al. (Eds.) (2012): Stuid i Prace z Geografi i Geologii, 28. [as unnamed phase]
Karwowski, L., Kryza, R., Muszyński, A., Kusz, J., Helios, K., Drozdzewski, P. and Galuskin, E. (2015) Czochralskiite, IMA 2015-011. CNMNC Newsletter No. 25, June 2015, page 534; Mineralogical Magazine, 79, 529-535.
Karwowski Ł., Kryza R., Muszyński A., Kusz J., Helios K., Drożdżewski P., Galuskin E.V. (2016): Czochralskiite, Na4Ca3Mg (PO4) 4, a second new mineral from the Morasko IAB-MG iron meteorite (Poland). European Journal of Mineralogy, 28: 969-977.

Internet Links for CzochralskiiteHide

Localities for CzochralskiiteHide

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.
Poland (TL)
 
  • Wielkopolskie
    • Poznań
Muszyński A. et al. (Eds.) (2012): Stuid i Prace z Geografi i Geologii, 28. [as unnamed phase]; Karwowski, L., Kryza, R., Muszyński, A., Kusz, J., Helios, K., Drozdzewski, P. and Galuskin, E. (2015) Czochralskiite, IMA 2015-011. CNMNC Newsletter No. 25, June 2015, page 534; Mineralogical Magazine, 79, 529-535; Karwowski Ł., Kryza R., Muszyński A., Kusz J., Helios K., Drożdżewski P., Galuskin E.V. (2016): Czochralskiite, Na4Ca3Mg (PO4) 4, a second new mineral from the Morasko IAB-MG iron meteorite (Poland). European Journal of Mineralogy, 28: 969-977.
Mineral and/or Locality  
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