| Locality type: | Cliff |
| Classification |
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| Species: | Prehnite |
| Formula: | Ca2Al2Si3O10(OH)2 |
| Comments: | Golley & Williams list prehnite as occurring at Roscommon Cliff, quoting Carne (1822). Russell (1910) however pointed out that Carne refers to the veins in greenstones around Botallack Head (between Crowns Rock and Wheal Cock Zawn) and not to Roscommon Cliff (which adjoins Wheal Cock Zawn on the north). |
| Confirmation |
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| Validity: | Erroneously Reported |
| Associated Minerals: |
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| Associates: | Asbestos
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| Data |
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| Mineral Data: | Click here to view Prehnite data |
| Locality Data: | Click here to view Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, Cornwall, England, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 786766 |
| Long-form Identifier: | 1:3:786766:8 |
| GUID (UUID V4): | 637999ff-5219-4ac0-adb6-857068fb9648 |
| Nearest other occurrences of Prehnite |
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| 0.3km (0.2 miles) | ⓘBotallack Head (Wheal Cock Carn), Cliff outcrops, Botallack, St Just, Cornwall, England, UK |
| 0.6km (0.4 miles) | ⓘLevant Mine, Trewellard, St Just, Cornwall, England, UK |
| 0.7km (0.4 miles) | ⓘBotallack Mine, Botallack, St Just, Cornwall, England, UK |
| 34.5km (21.4 miles) | ⓘPredannack Head, Mullion, Cornwall, England, UK |
| 35.2km (21.9 miles) | ⓘWheal Unity (Trenance Mine; Ghostcroft Mine), Mullion, Cornwall, England, UK |
| 35.2km (21.9 miles) | ⓘParc Bean Cove, Mullion, Cornwall, England, UK |
| 35.5km (22.0 miles) | ⓘOgo-dour Cove, Mullion, Cornwall, England, UK |
| 40.8km (25.3 miles) | ⓘPen Voose Cove (Parn Voose Cove), Landewednack, Cornwall, England, UK |
| 41.1km (25.5 miles) | ⓘEnys Head, Ruan Minor, Grade-Ruan, Cornwall, England, UK |
| 44.6km (27.7 miles) | ⓘCoverack Cove, Coverack, St Keverne, Cornwall, England, UK |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | in low- to medium-grade metamorphic environments, and in some regionally metamorphosed rocks, axinites...localities in Russia and Pakistan. They are occasionally cut as gemstones, and the type specimen of magnesio-axinite...Group The general formula and nomenclature for the axinite group (Sanero and Gottardi 1968) can be summarized...where: A is Ca or Mn2+; M is Fe2+, Mg, or Mn2+; and the crystal structure is triclinic, with P1 symmetry...National Laboratory. He is now a technology consultant and registered patent agent. He is currently writing |  | | Book | | There have been !)lines in Cornwall for some 3500 years where the intrusion of huge masses of granitic...very valuable ores and minerals. Besides their economic importance, many of the ores and associated minerals...beauty both in form and colour. They range from azure-blue 'hair crystals' of copper ore and the branching...significant minerals to come out of southwest England. The accompanying captions describe the crystallographic...'"'ell as providing information on their extraction and exploitation. Prefaced by a brief introduction on |  | | Book | | ROCKS AND MINERALS MICHAEL O’DONOGHUE AMERICAN NATURE GUIDES ROCKS AND MINERALS AMERICAN NATURE...NATURE GUIDES ROCKS AND MINERALS Michael O’Donoghue GALLERY BOOKS An Imprint of W. H. Smith Publishers...strictly forbidden. Published in England by Dragon’s World Ltd, Limpsfield and London All rights reserved under...under International and Pan American Copyright Convention No part of this book may be reproduced, stored...available for bulk purchase for sales promotions and premium use. For details write or telephone the Manager |
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