BGS mineralogy and petrology collection record

Sample number E46973; E46973/A; E46973/B; COLLNORT71;
Sample Donor Taylor, R.T.
Rock name Not entered
Stratigraphy Not entered
Comments Quartz, feldspar porphyry.
Locality details Cliff top NW of Trewavas Head, 400 m. at 335 deg from Trewavas.
50k map sheet Penzance (358)

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Map reference SW 5945 2675
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


E46973/A

Cross Polarized, E46973/A

Plane Polarized, E46973/A

Plane Polarized, E46973/A


E46973/B

Cross Polarized, E46973/B

Plane Polarized, E46973/B

Plane Polarized, E46973/B