BGS mineralogy and petrology collection record

Sample number S50225; S50225/A; COLLNOYW455;
Sample Donor May,F.
Rock name 'Original entry: Porphyritic Microgranite'
Stratigraphy Not entered
Comments Porphyritic microgranite from sheet in the Fora Ness hornblendic mass
Locality details Fora Ness 160 yds W 29 deg N of trig. pt. 189 ft
50k map sheet Central Shetland (128)

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Map reference HU 453 476
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


S50225

Cross Polarized, S50225

Plane Polarized, S50225

Plane Polarized, S50225


S50225/A

Cross Polarized, S50225/A

Plane Polarized, S50225/A

Plane Polarized, S50225/A