BGS mineralogy and petrology collection record

Sample number S30942; COLLNOSB227;
Sample Donor Buchan,S.
Rock name 'Original entry: Porphyritic Rhyolite'
Stratigraphy Not entered
Comments Porphyritic rhyolite; ORS
Locality details 560 yds SSW of the centre of Brei Holm and 2000 yds ESE of S end of Gorda Water
50k map sheet West Shetland ? (127)

View images in GeoScenic related to 'West Shetland ?'

View the geology near 'West Shetland ?'

Map reference HU 187 598
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


S30942

Cross Polarized, S30942

Plane Polarized, S30942

Plane Polarized, S30942