BGS mineralogy and petrology collection record

Sample number	E58508
Sample Donor	Dangerfield,J.; Hawkes,J.R.; Wheatley, C.W.;
Rock name	'Original entry: Microgranite Elvan'
Stratigraphy	Not entered
Comments	Elvan.
Locality details	Brash field gateway by roadside, 0.4 Km. NNE. of Halwinnick Butts + 1.5 Km. at 037 deg. from Rilla Mill Chapel.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View the geology near 'Tavistock'
Map reference	SX 3055 7455
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.