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The significance of prograde and retrograde quartz-bearing intergrowth microstructures in partially melted granulite-facies rocks

Abstract:

Pelitic and semi-pelitic granulites from Namaqualand, South Africa underwent dehydration melting and developed leucosome domains in which large garnets are intimately associated with coarse-grained quartz in lobate embayments and inclusions. Local retrograde replacement of leucosome anhydrous phases by coarse biotite and/or sillimanite is not uncommon, but is far from universally developed. Also developed are distinctive skeletal or symplectic intergrowths of quartz with biotite, sillimanite ...

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Journal:
Lithos
Volume:
56
Issue:
1
Pages:
108-110
Publication date:
2001-01-01
ISSN:
0024-4937
URN:
uuid:840065f9-7aac-4ad5-83a3-aa6b954af1bd
Source identifiers:
83330
Local pid:
pubs:83330

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