BGS mineralogy and petrology collection record

Sample number S29863; S29863/A; S29863/A'; S29863/B;
Sample Donor Tonks, L.H.
Rock name 'Original entry: ?Mugearite Or Basalt'
Stratigraphy Not entered
Comments Mugearitic basalt lava with feldspar phenocrysts (transition zone of upper composite flow)
Locality details In Allt nam Mucraidh 600 yds E 18 deg S of spot ht 1806 ft on Sithean na Raplaich
50k map sheet Tobermory (52)

View images in GeoScenic related to 'Tobermory'

View the geology near 'Tobermory'

Map reference NM 6410 5151
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


S29863

Cross Polarized, S29863

Plane Polarized, S29863

Plane Polarized, S29863


S29863/A

Cross Polarized, S29863/A

Plane Polarized, S29863/A

Plane Polarized, S29863/A


S29863/A'

Cross Polarized, S29863/A'

Plane Polarized, S29863/A'

Plane Polarized, S29863/A'


S29863/B

Cross Polarized, S29863/B

Plane Polarized, S29863/B

Plane Polarized, S29863/B