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Orhaneli, Tavşanlı Zone, Bursa Province, Marmara Region, Turkey

Around the town of Orhaneli, sodic metapelites form a coherent regional metamorphic sequence, several tens of square kilometres in size, and over a kilometre thick. The stable coexistence of jadeite + chloritoid + glaucophane + lawsonite indicates metamorphic pressures of 24 ± 3 kbar and temperatures of 430 ± 30°C for the peak blueschist facies conditions.

Mineral List

Albite
'Apatite'
'Chlorite Group'
Chloritoid
'Crossite'
Ferro-glaucophane
'Garnet'
Glaucophane
Graphite
Jadeite
Lawsonite
Magnetite
Muscovite
var: Sericite

Paragonite
'Phengite'
Quartz
Rutile
'Tourmaline'


18 entries listed. 11 valid minerals.

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References

- Okay, A.I. (2002): Jadeite–chloritoid–glaucophane–lawsonite blueschists in northwest Turkey: unusually high P/T ratios in continental crust. Journal of Metamorphic Geology 20, 757-768.

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