Pseudomorphs – March 10

Pseudomorphs are mineral crystals that possess the external form of another species, rather than expressing their own atomic arrangement, they display the form of another mineral species with a different atomic arrangement. Haüy coined the term pseudomorph in his 1801 Traité de Minéralogie, by combining Greek roots pseudo for false, and morph for form.

This gallery contains 20 specimens.

Anatase after Titanite
#1777 Anatase after Titanite $100		 Azurite replacing Chalcostibite
#1779 Azurite replacing Chalcostibite $125		 Bindheimite (Oxyplumboroméite) after Bournonite
#1766 Bindheimite (Oxyplumboroméite) after Bournonite $225		 Calcite after Ikaite
#1772 Calcite after Ikaite $50
Chrysocolla after Malachite after Azurite
#1761 Chrysocolla after Malachite after Azurite $150		 Chrysocolla after Malachite after Azurite
#1763 Chrysocolla after Malachite after Azurite $250		 Colemanite after Inyoite
#1768 Colemanite after Inyoite $75		 Goethite after Pyrite
#1764 Goethite after Pyrite $100
Hematite coating Dolomite after Calcite
#1780 Hematite coating Dolomite after Calcite $400		 Malachite after Azurite
#1760 Malachite after Azurite $150		 Malachite replacing Cuprite
#1781 Malachite replacing Cuprite $250		 Muscovite replacing Leucite
#1765 Muscovite replacing Leucite $175
Plumbogummite after Pyromorphite
#1771 Plumbogummite after Pyromorphite $200		 Prehnite after Laumontite
#1758 Prehnite after Laumontite $75		 Quartz cast of Anhydrite
#1775 Quartz cast of Anhydrite $75		 Shattuckite after Calcite
#1773 Shattuckite after Calcite $150
Siderite after Aegirine
#1769 Siderite after Aegirine $150		 Stevensite after Pectolite
#1774 Stevensite after Pectolite $200		 Stibiconite after Stibnite
#1770 Stibiconite after Stibnite $50		 Ulexite after Tincalconite after Borax
#1759 Ulexite after Tincalconite after Borax $75