Corsi Collection of Decorative Stones

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view of stone 998

Corsi 998, approx. 145 x 73 x 40 mm, © Oxford University Museum of Natural History

OUMNH Number: 998  
Name and quarry location: Granito delle Alpi, from the Alps  
Geological description: Feldsparphyric diorite. Fractured and replaced zoned feldspar phenocrysts and rarer clusters of amphibole, are set in a granular groundmass of white feldspar, quartz and a ferromagnesian mineral. It has pervasive chloritic alteration and granular recrystallisation. Pale green veins cross the specimen  
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Corsi's classification: Class 16. Granites; ii. Italian granites  
Corsi's text: 216.54/ S28.2 Granito delle Alpi  

Full entry in English

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Funded by Esmée Fairbairn Foundation Oxford University Museum of Natural History University of Oxford