BGS mineralogy and petrology collection record

Sample number E1954
Sample Donor Not entered
Rock name Not entered
Stratigraphy Not entered
Comments altered amygdaloidal andesite [ andesite or alt olivine basalt ]: much decomposed to calcite and chlorite; feldspar needles in groundmass amongst chlorite and interstitial tachylite. Tachylite forms ring round amydules which are filled with calcite.
Locality details Creg Kermod, Deal rock, Castletown: pseudomorphs after hypersthene
50k map sheet Isle of Man (57)

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Map reference SC 26561 66835
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions