BGS mineralogy and petrology collection record

Sample number S39458
Sample Donor Macgregor,A.G.
Rock name 'Original entry: Granodiorite Porphyry'
Stratigraphy Not entered
Comments Locally white feldspar-phyric facies of medium- to fine-grained grey rock; a vein like S. 39458 is seen to cut pink feldspar granodiorite
Locality details Burn 1120 yds S 10 deg W of Achleek
50k map sheet Tobermory (52)

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Map reference NM 7910 5906
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


S39458

Cross Polarized, S39458

Plane Polarized, S39458

Plane Polarized, S39458