BGS mineralogy and petrology collection record

Sample number S20726
Sample Donor Anderson, E.M.
Rock name 'Original entry: Hornblende Porphyrite; Similar To S. 20727'
Stratigraphy Not entered
Comments S. 20718-20728 are a set of irregular intrusive sheets, either horizontal or inclined to W or N. S. 20721-20722 are members of a composite sheet, S. 20722 being maerginal and margins of two being abrupt;S. 20723 and S., 20724 are similarly related b
Locality details 200 yds SW from cairn on Druim an Aoineidh
50k map sheet Iona (43)

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View the geology near 'Iona'

Map reference NM 2555 2225
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


S20726

Cross Polarized, S20726

Plane Polarized, S20726

Plane Polarized, S20726