BGS mineralogy and petrology collection record

Sample number S27349
Sample Donor Read, H.H.
Rock name 'Original entry: Chlorite-Tremolite Phyllonite'
Stratigraphy Not entered
Comments Sheared greenstone at margin
Locality details 800 yds N of Helliers Water
50k map sheet Unst (131)

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Map reference HP 611 053
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


S27349

Cross Polarized, S27349

Plane Polarized, S27349

Plane Polarized, S27349