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2 specimens listed
Page   1 |

Heulandite - historic, ex Robert Ferguson
stock #1078-JM-3710
Teigarhorn, Berufjordur, Suour Mulasysia
Suour Mulasysla, Iceland
8.8 x 7 x 3.7 CM (cabinet)
price: $140
Early summer 2021

Heulandite crystals in a pinkish Natrolite vug from the famed collection of Robert Ferguson (1767-1840). This was obtained by John Marshall in 1998 when the collection was rediscovered and sold-off in lots. This piece, like many others, does not have a label, so some details are lost, but the collection lists pieces from Berufjordur so this given locality is a speculation. However this seems very likely as this matches specimens from here very well, and Heulandite was a new mineral in the years that Ferguson was actively collecting. Crystals reach 1.7 CM and are the typical sharp, glassy partly transparent type well-known from this region of Iceland. Some penetration twins of the prisms are distinctive. No damage.

Heulandite on botryoidal Quartz
stock #9.1-253D(stk)
Jalgaon District
Maharashtra, India
9.8 x 7.2 CM (cabinet)
price: $550
Spring 2013

Ex. Doug Ervin collection, Ex Collector's Edge. The mineral market is flooded with average quality trap-rock specimens, so we avoid most Indian Zeolites unless they are especially good. This one is one of those few! Perfect, undamaged, sharp, well-composed and a great example of the specie. Far better in person the esthetics are top notch.