Kaolinite ps. after Orthoclase
Unknown Owner
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Colloquially known as a 'Pig's Egg' by miners and collectors alike, Kaolinite pseudomorphs after Orthoclase feldspar were found within the China Clay deposits in a number of quarries around St. Austell in Cornwall. From the Melbur China Clay Pit at St. Stephen-in-Brannel, Cornwall, this is a first class example, being made from almost pure Kaolinite. It is a uniform creamy-white with well-defined sharp edges and faces. The pseudomorph is that of a former Orthoclase Carlsbad twin. A classic from the china clay suite of minerals in the St. Austell mining district.
Product details
Species
SizeMiniature
Dimensions2.0 x 4.7 x 0.9 cm
Added on10/24/2024
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 03/2025 | Unknown Owner | $400.00 |
| — | Crystal Classics | Not disclosed |
Learn more
Mineral guide
Learn about Orthoclase
classic potassium feldspar with colors from colorless to pink; famed for Carlsbad, Baveno and Manebach twins and Alpine adularia in clefts.Regional guide
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