BGS mineralogy and petrology collection record

Sample number	E58507
Sample Donor	Dangerfield,J.; Hawkes,J.R.; Wheatley, C.W.;
Rock name	'Original entry: Microgranite Elvan'
Stratigraphy	Not entered
Comments	"Cheesewring" Elvan.
Locality details	Brash in Trackway due S. of Rilla Mill. 100 deg. from Henwood Chapel.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View the geology near 'Tavistock'
Map reference	SX 2940 7292
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.