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Slide_no: Q00691
Photo_Number: P2200445
Category: Mineral/Chemical
Common: CLAY-SLATE
_NameSuppliers: Gregory & Co.
Where_Collected: Penrhyn QUARRIES, Bethesda, NORTH WALES
Remarks: MICROSCOPICAL PETROGRAPHY
Ringing: yes
Help_flag: 4
Help-date_resolved: 08/11/2016
Additional_photos: Q00691
Image  Image

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