BGS mineralogy and petrology collection record

Sample number E49683; E49683/A; E49683/B; COLLNODAN1654;
Sample Donor Dangerfield,J.; Hawkes,J.R.;
Rock name 'Original entry: Microgranite'
Stratigraphy Not entered
Comments Fine granite, megacryst poor, ? with lithionite.
Locality details Geevor Tin Mine, 11th level, Crosscut to Boscaswell No. 1 Lode, 35 m. from Treweeks Shaft.
50k map sheet Penzance (351)

View images in GeoScenic related to 'Penzance'

View the geology near 'Penzance'

Map reference SW 375 345
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


E49683/A

Cross Polarized, E49683/A

Plane Polarized, E49683/A

Plane Polarized, E49683/A


E49683/B

Cross Polarized, E49683/B

Plane Polarized, E49683/B

Plane Polarized, E49683/B