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Pseudomorphs

Milpillas pseudomorphs.jpg Milpillas malachite after azurite.jpg Carlsbad orthoclase twin replaced by topaz, Schneckenstein Cliff, Germany.
Orthoclase, altered to sericite and kaolinite, Carlsbad twin, 37mm, Melbur Clay Pit, Cornwall. Cassiterite pseudomorph after Carlsbad twinned orthoclase, 37 mm long. 1828 find from Wheal Coates, St Agnes, Cornwall. Cavnic Mine siderite epimorph (hollow) on a 6 cm calcite rhomb
Witherite sixlings with thin baryte coating, 5 cm, Nentsberry Haggs Mine, Alston Moor. Witherite twins, 4 cm. Cross cut on Liverick Vein, between High Raise and Treloar veins, Nentsberry Haggs Mine.  Achtaragdite euhedron, 22 mm, Vilyui River Basin, Siberia
Wheal Hope galena after pyromorphite, plumbeine, 65 x 25 x 33, crystals to 15 mm.