BGS mineralogy and petrology collection record

Sample number S1999; S1999/a; S1999/b;
Sample Donor Maconachie,A.
Rock name 'Original entry: Tachylite'
Stratigraphy Not entered
Comments Contact with grit; variolitic basalt
Locality details Burn of Milton, Loch Vennachar
50k map sheet Loch Lomond (38)

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Map reference NN 5737 0686
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


S1999/a

Cross Polarized, S1999/a

Plane Polarized, S1999/a

Plane Polarized, S1999/a


S1999/b

Cross Polarized, S1999/b

Plane Polarized, S1999/b

Plane Polarized, S1999/b