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Geological Map of Piona Peninsula | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy this chart was extracted from the "Structural map of the South-alpine basement in the lake Como area with elements of earth surface instability". |
| Photo ID: 206513 View Count: 75 | |
Piona mine \'04 | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy This is me at one of the many entrances of the Piona's pegmatite mine,on Como's lake. This mine,now worked out,has been overworked for its huge muscovite production,especially in the past century. Those big pegmatite veins give mostly milky aquamarine and schorl. Some of them also give wineish coloured garnets. |
| © Sarah Sudcowsky | Photo ID: 124321 View Count: 873 |
the deep seam | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy View of the deep seam photo Luigi Chiappino |
| © luigi chiappino | Photo ID: 247333 View Count: 21 |
the path for the dump | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy The beginning of the path for the dump over the road for Piona photo Luigi Chiappino |
| © luigi chiappino | Photo ID: 247332 View Count: 20 |
view of the dump | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy view of the dump over the road for Piona Photo of Luigi Chiappino |
| © luigi chiappino | Photo ID: 247334 View Count: 21 |
View of the Pegmatite Dyke | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy Mineralogical zonation of the Malpensata Pegmatite Dyke: A central zone with megacrystals of Albite and interstitial Quartz (approx. 0,5 m wide), a middle zone with megacrystals of Schorl an Albite, some booklets of Muscovite and Garnets (approx.0,2-0,3 m wide) and the wall zone that is a termometamorphic contact with the host rocks. |
| Photo ID: 206506 View Count: 84 | |
View of the Pegmatite Dyke | |
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Olgiasca-Malpensata (Piona), Colico, Lecco Province, Lombardy, Italy This photo shows the position of the dyke, parallel respect the metamorphic foliation of the host rocks (micaschists of the Dervio-Olgiasca zone), and the parallelism of the pegmatite's layes respect the borders of intrusion. The deformation of intermedial layer you can see at the bottom of the photo could be related at a plastic movement of ... |
| Photo ID: 206509 View Count: 102 | |
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