Large spread of dumps and two engine houses. Adits in cliffs.
Photo: Bernie Millington
UK Grid Reference: SW596264
Tristramite was first discovered in the course of X-ray diffraction examination of radioactive material collected from south-west England by staff of the former Atomic Energy Division of the Geological Survey and Museum of Great Britain (now Institute of Geological Sciences).
Although tristramite has been identified in samples from dumps at several old copper and/or tin mines in Cornwall, including Trequeen, Wheal Alice, Wheal Buller, Wheal Damsel, and Wheal Providence, the best specimens to date come from Wheal Trewavas, where it occurs as a fine-grained aggregate and as coarser-grained infillings occupying fine fractures and cavities.
The data used to describe Tristramite were obtained from material from Wheal Trewavas.
6 entries listed. 6 valid minerals. 1 type locality (valid mineral).
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. 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.
Atkin, D., Basham, I.R., and Bowles, J.F.W. (1983): Tristramite, a new calcium uranium phosphate of the rhabdophane group. Mineralogical Magazine 47, 393-396.
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Locality Updated: Cold Valley, Bad Harzburg, Harz, Lower Saxony, GermanyFrom Frank K. Mazdab, 10th Dec 2013 08:40:40