I visited Moor Farm Quarry, Bonsall Moor on the 18th May 2017. It's best approached via Bonsall Moor Lane from the Winster direction. I was able to park on the grass along side the entrance track to the Quarry and walk the rest of the way. It's not possible to drive much further as there is a padlocked gate across the track a little further on.
Background
I have been unable to find any real information on this quarry and its
history. It is currently quite a dangerous site being overgrown and
with very unstable rock faces. Care should be taken when exploring it!
I have a strong suspicion that the quarry was originally much deeper
and has probably been backfilled at some point.
There are also a considerable number of old lead mine workings on the high ground just east of the quarry.
Mineralogy
The quarry contains Limestone with many small mineral veins running
through it. Calcite, Flourspar, Baryte and Galena are evident.
Minerals found
The site contains a lot of Calcite and I managed to
find and extract some rather nice scalenohedron twin crystals formed on
a bed of dog tooth crystals.
Galena was present in small quantities mainly amongst the baryte which also appeared in cockscombe form.
There was also a small presence of Fluorspar.
The nearby mine spoil heaps above the quarry revealed plenty of Iceland
Spar (the clear rhomboid form of Calcite) along with Galena, Baryte and
some Iron Pyrites.
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THE TRACK TO THE QUARRY ON THE JUNCTION OF BONSALL MOOR LANE |
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VIEW OF THE QUARRY |
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QUARRY FACE |
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OLD MINE WORKINGS OVERLOOKING MOOR FARM |
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ATTRACTIVE VIEW JUST EAST OF THE QUARRY |
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MINERAL VEINS AND CAVITIES IN THE LIMESTONE |
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FLUORSPAR FILLED CAVITY HIGH UP ON THE CLIFF FACE |
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CALCITE SCALENOHEDRON TWINS |
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GALENA WITH BARYTE AND PURPLE FLUORSPAR |
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FRESHLY FRACTURED GALENA |
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SMALL IRON PYRITES CUBES IN LIMESTONE |
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