BGS mineralogy and petrology collection record

Sample number COLLNOWAT13; G3999;
Sample Donor Styles,M.T.
Rock name 'Original entry: Non-Amygdaloidal Dacitic Volcanic Rock'
Stratigraphy Not entered
Comments Polished Section. Altered volcanic rock with abundant feldspar microphenocrysts and opaque pseudomorphs after mafic minerals. Amygdales less distinct but up to 1mm and more irregular interstitial infills present. Infills show complex pattern of early carbonate + silica, carbonate, quartz + clay. Some areas of green smectite.
Locality details Raddon Borehole 1
50k map sheet Not entered

View the geology near 'Not entered'

Map reference SS 09 00
Year collected Not entered 
Bore name Raddon Bh 1
Confidentiality No restrictions