Fine specimens of glassy to milky analcime crystals to 25 mm across coating quartz and apophyllite with pectolite are held in the National Museum of Wales collection. Fleshy pink stevensite also extensively coats or totally replaces pectolite here. The specimens were obtained through the purchase of the collection of G.J. Williams, the former H.M. Mine Inspector for North Wales, in 1927.
Additionally, Harrison (1897) described prehnite associated with quartz, calcite, natrolite and brookite from joint planes in the Carreg yr Imbill dolerite intrusion.
Gimlet Quarry has been in-filled and material is no longer collectable here.
W. Jerome Harrison, Jr. (1897): An Occurrence of Prehnite in Wales. Mineralogical Magazine 11, 198-198.
|
|
UK OS Grid Reference: SH387343
Map Reference: 52°52'53"N , 4°23'50"W
This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
|
Mineral List:9 entries listed. 7 valid minerals.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
