QUARTZ PSEUDOMORPHS AFTER FLUORITE - Wheal Mary Ann, Cornwall
« backQUARTZ PSEUDOMORPHS AND EPIMORPHS AFTER FLUORITE
Wheal Mary Ann, Menheniot, Cornwall
Hollow quartz (chalcedony) pseudomorphs lined with quartz crystals. A classic specimen from this 19th century Cornish lead mine.
Pseudomorphs are minerals that have chemically replaced the crystals of other minerals and therefore have the outward appearance of the former crystals. In this case quartz has replaced octahedral fluorite crystals.
In this specimen the pseudomorphs are themselves coated with another generation of quartz crystals (epimorphs).
Click on a picture for a larger image
Size: 12 x 12 x 6 centimetres
Weight: 920 grams
Wheal Mary Ann, Menheniot, Cornwall
Hollow quartz (chalcedony) pseudomorphs lined with quartz crystals. A classic specimen from this 19th century Cornish lead mine.
Pseudomorphs are minerals that have chemically replaced the crystals of other minerals and therefore have the outward appearance of the former crystals. In this case quartz has replaced octahedral fluorite crystals.
In this specimen the pseudomorphs are themselves coated with another generation of quartz crystals (epimorphs).
Click on a picture for a larger image
Size: 12 x 12 x 6 centimetres
Weight: 920 grams
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