BGS mineralogy and petrology collection record

Sample number E47400; E47400/A; E47400/B; COLLNOAN26;
Sample Donor Wilson,A.C.
Rock name 'Original entry: Spilitized Tholeitic Dolerite'
Stratigraphy Not entered
Comments Coarse grained, intrusive gabbroic greenstone. ( ? Devonian ).
Locality details Cressars Reef, 1240 m. bearing 155 deg from St. Gulwal's Church, Gulwal.
50k map sheet Penzance (351)

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Map reference SW 4900 3064
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


E47400/A

Cross Polarized, E47400/A

Plane Polarized, E47400/A

Plane Polarized, E47400/A


E47400/B

Cross Polarized, E47400/B

Plane Polarized, E47400/B

Plane Polarized, E47400/B