A fine specimen of
        malachite from from Central Wales.

Malachite from Central Wales:
sample 22 x 18 mm

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Welcome to the archive website of John S. Mason
of Machynlleth, Mid-Wales


John S Mason October 1962 - September 2024


* Author of "Wales - The Missing Years" - a trip through deep time (2021).


* Author of the popular "The Making of Ynyslas" - a trip through the last 25,000 years (2019).


* Author of "Shore Fishing - a guide to Cardigan Bay" (2013) 


* Climate science communicator - writer at Skeptical Science.


Site updated: 12/07/2026