BGS mineralogy and petrology collection record

Sample number	E26381; COLLNOEE378;
Sample Donor	Elliot,R.W.
Rock name	Not entered
Stratigraphy	Not entered
Comments	Fine grained porphyritic "hornblende porphyrite", near top of sill.
Locality details	Central quarry at Middle Mill, SE. end of quarry, 200 Yds. W. at 15 deg. S. of Chapel at Middle Mill.
50k map sheet	St. Davids (209) View images in GeoScenic related to 'St. Davids' View a geological map near 'St. Davids'
Map reference	SM 803 260
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.