2017
SJ1972 : Pen yr Henblas Quarry 1
taken 7 years ago, near to Pentre Halkyn, Flintshire/Sir y Fflint, Wales
Pen yr Henblas Quarry 1
The disused quarry that exploited the Pentre Chert Formation (see
SJ1972 : Pentre Chert Formation). It is recorded that the chert, a compact, sometimes glassy rock comprising microcrystalline silica, was exploited for use in the ceramics industry as an additive in the bodies for porcelain and bone china.
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