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Mineralogical ClassificationIMA #2004-054 = Lingunite

9th Jul 2006 11:37 UTCSteve Sorrell Expert

Excalibur Minerals list CATALOG #20506 - Vol. XXXII, No. 6 (note that this is not the type locality):


LINGUNITE- Tenham Sta, So. Gregory, Queensland Australia. This NEW SPECIES occurs as minute inclusions within the Tenham hypersthene-olivine chondrite metorite that fell in 1879. Formula: (Na,Ca), IMA #2004-054. Each sample is a small polished section, accompanied by a sharp SEM image, analytical chemistry and XRD data confirming the species visually, chemically and structurally! Associations vary but typically include kamacite, troilite, olivine, ringwoodite etc. Only three confirmed samples on hand @ 375.00 each, with full documentation!


Regards

Steve

9th Jul 2006 13:42 UTCMarco E. Ciriotti Manager

Lingunite was found also in the Sixiangkou L6 chondrite meteorite, Jiangsu, China.


References:

• Liu, L. (1978): High-pressure phase transformations of albite, jadeite and nepheline. Earth Planetary Science Letters, 37, 438-444.

• Gillet, P., Chen, M., Dubrovinsky, L., El Goresy, A. (2000): Natural NaAlSi3O8-hollandite in the shocked Sixiangkou meteorite. Science, 287, 1633-1636.

• Tomioka, N., Mori, H., Fujino, K. (2000): Shock-induced transition of NaAlSi3O8 feldspar into a hollandite structure in a L6 chondrite. Geophysical Research Letters, 27, 3997-4000.

• Zhang, A., Hsu, W., Wang, R., Ding, M. (2006): Assemblage of diopside, pyroxene, akimotoite, and ringwoodite in the heavily shocked Sixiangkou L6 chondrite: further constraints on conditions of shock metamorphism. Lunar and Planetary Science, 37, 1069.

15th Apr 2007 16:00 UTCJeffrey de Fourestier Expert

The Sixiangkou material is the type locality.

17th Apr 2007 00:12 UTCJeffrey de Fourestier Expert

An addition to this discussion:


I cam across a reference to "Unnamed (Tetragonal analogue of Albite)" on MinDat that gives the "type" locality as the Suizhou meteorite. In fact, confirmed by the reference given (AmMin 85: 1564), the type locality is the Sixiangkou meteorite. This is a description of what is now known as Lingunite.
 
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