
Sidcup Lapidary & Mineral Society
Notes and finds
from our field trip to
Machen
Quarry, Machen, Caerphilly, South
Wales.
25th August 2009
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View of some of the benches
The gang hard at work near the top of the quarry.
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A blue/green damsel fly watches over the proceedings! |
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Pale cream coloured "coxcombe" barytes on a bed of calcites.
Close up of similar specimen.
Closer still. Baryte crystal group with calcites.
A loose baryte group.
A covering of black calcite crystals on matrix.
... and another.
Baryte and calcite together.
detail of above.
A large matrix specimen showing layers of calcite lined crevices.
Detail of above showing rhombohedral shaped crystals.
A small double sided specimen with tiny calcites transparent on this side...
...and white on the other side.
Detail of above.
An impressive
larger piece with almost pure white baryte crystals. |