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Cross section of hanging wall & pegmatite at headwall | |
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Spinelli Quarry (Spinelli prospect), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA A view of the Spinelli Prospect headwall after exploring the pegmatite beyond the open cut, following the pegmatite. The contact with the Glastonbury granite gneiss hanging wall is plainly visible in the image from center to left. Note the color change of the feldspar from pink near the headwall to brick red about 1.2 meters beyond the ... |
| © FED '09 | Photo ID: 227029 View Count: 56 |
Headwall of open cut | |
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Spinelli Quarry (Spinelli prospect), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA View of the Spinelli Prospect open cut headwall. That is not a 12 meter inflatable hammer, but a standard-issue 30 cm tool! This illustrates how little the pegmatite was worked. Visible are the Glastonbury granite gneiss hanging wall and pegmatite. Spinelli Prospect was featured in the August 1949 issue of Scientific American in the article ... |
| © FED '09 | Photo ID: 227027 View Count: 69 |
One of the larger dumps | |
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Simpson Quarry, South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA Photo by Peter Cristofono (21 August 2004). |
| © 2004 Peter Cristofono | Photo ID: 123808 View Count: 295 |
Quartz Dike Cutting Pegmatite | |
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Howe Quarry, South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA Photo from: Bastin, E. (1910). Feldspar Deposits of the United States (USGS Bulletin 420). |
| Photo ID: 202811 View Count: 41 | |
Simpson Quarry | |
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Simpson Quarry, South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA Photo by Peter Cristofono (21 August 2004). |
| © 2004 Peter Cristofono | Photo ID: 123809 View Count: 230 |
View towards end of open cut | |
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Spinelli Quarry (Spinelli prospect), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA View of Spinelli Prospect looking southwest, near the entrance looking towards the headwall of the open cut (about 29 m). There are two remarkable features: 1) very little quarry work, and 2) no apparent sign of drill holes for blasting (how it was quarried remains a mystery). E. N. Cameron (USGS PP-255, 1954) was not able to clearly identify ... |
| © FED '09 | Photo ID: 227026 View Count: 72 |
View towards entrance | |
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Spinelli Quarry (Spinelli prospect), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA View of the Spinelli Prospect looking northwest towards the entrance from near the end of the open cut. The prospect was quarried so little, it's little more than a dip in the woods. The country rock exposure on the right is Glastonbury granite gneiss, and on the left is a simple pegmatite. See E. N. Cameron, USGS Professional Paper 255, and ... |
| © FED '09 | Photo ID: 227028 View Count: 39 |
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