A heteromorph of venanzite
By: Holmes, Arthur
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Material type: 
ArticleDescription: 225-232pp.Subject(s): History - Venanzite forms - East Africa | Petrographic characters - east Africa | Mineral described - East Africa | Petrology - East Africa
In:
Geological magazine : Vol. 79 Iss. 1-6 Year. 1942Summary: Extract
Venanzite. Venanzite is a volcanic rock consisting essentially of y melilite, leucite, olivine, and a little phlogopitic biotite, which occurs as small lava-flows of late- or post-Pliocene age near San Venanzo, Umbria, Italy. This isolated centre of activity lies north-west of Lake Bolsena and is regarded as an outlying part of the Vulsinian district of the Roman netroaranhic nrovince.
| Item type | Current location | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Article
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Library and Information Centre Periodical Section | Bound Journal Collection | Not for loan | 002553_37 | ||
Serials/Scientific Journal
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Library and Information Centre Periodical Section | Bound Journal Collection | 550 GEO (Browse shelf) | Available | 002553 |
Extract
Venanzite. Venanzite is a volcanic rock consisting essentially of y melilite, leucite, olivine, and a little phlogopitic biotite, which occurs as small lava-flows of late- or post-Pliocene age near San Venanzo, Umbria, Italy. This isolated centre of activity lies north-west of Lake Bolsena and is regarded as an outlying part of the Vulsinian district of the Roman netroaranhic nrovince.
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