Home > Pseudomorphs – March 3 > MS1524 Prehnite casts of Laumontite

Prehnite casts of Laumontite

Prehnite is a calcium aluminum silicate mineral. Prehnite seems to be the first mineral species named after a person, named by Hoffmann (1789) after its discoverer, Dutch Colonel Hendrik von Prehn (1733-1785). This is a classic epimorph wherein a late mineral deposited on top of an early formed mineral, which later dissolved away. The mineral laumontite readily dehydrates at the Earth's surface, characteristically with inclined habits. When hollow prehnite casts with inclined terminations are found, the typically presumed precursor is laumontite. This specimen comes from a lesser known locality in Virgnia. Nice. Formerly in the collection of Allen Parker, a collector from Tucson.

Price: $40

Item code: MS1524

For ordering, please use the order form.