Calcite- Complex twin
Daye Iron Mine, Edong Mining District, Huangshi Prefecture
7.4 x 5.4 x 4.2 CM (cabinet)
Worldwide mix summer
From the Daye mining area in 2002 before it became a well known mineral locality, this Calcite has a form unlike later finds. The Calcite is almost 6 CM in diameter, transparent (more so than the photos show) and with glassy luster. Some contacts are noted on the back (see the last photo of the back) but overall as seen it is in very fine condition damagewise. Displays well from several angles, we obtained this on one of of earliest trips to China and until recently it was in my personal collection.
Classic Cornish thumbnail specimen of the very desirable Galena after Pyromorphite crystals from Wheal Hope. Small but distinct crystals of Pyromorphite have full changed to Galena but the form remains. Ex John Marshall collection, obtained by him before 1970. These Pseudomorphs are only known from a few spots in the world and all seem to have been found over a century ago. These are especially uncommon from Cornwall, and while to many people are just black and ugly, they are a prize to those who understand these things!
The Eisieben mines date back to the end of the 19th century (or more), worked for Copper and Nickel, but from time to time some excellent Selenite was found. This is a choice piece, in pristine condition, with sharp delicate prisms on matrix. In person the transparency is far more impressive.
A very large, vividly fluorescent and nicely zoned Phosgenite crystal dominates the sizable matrix. Other areas of Phosgenite are noted on the piece but the main crystal is 4.6 CM across and presents well. What may be an old repair is noted, if so it is not affected by acetone testing and may be a natural crack. Much of the crystal is transparent to translucent and has the classic flat morphology noted from this ancient locale. Even if repaired (the price assumes this is so and is adjusted) this is a choice example and has a very nice presentation. This could also be trimmed to a killer miniature but that would remove many vugs of smaller crystals so we have left this intact. Ex Ara Dildilian and William Haladyz collections, clearly a very old piece.
Magnesite- large crystals
Kaswassergraben, GrobBreifing, Hieflau
9.1 x 6.8 x 6.5 CM (cabinet)
Worldwide mix summer
Very large to 5.6 CM across Magnesite crystals clustered on a Magnesite matrix from this classic locality. Kaswassergraben is famed for these rare and unusual hexagonal crystals unlike any other locality. This is an excellent example of a rare matrix piece with huge crystals for the locale. The back side is broken from the host rock but the front side main crystals present well with a fine pearly luster and stepped growth faces. I have not seen many of these and this is by far the largest crystal cluster I know of, other large crystals are usually about 2 CM at best.
Stibnite - classic Japanese locale
Ichinokawa, Saijo , Ehime Prefecture
6.4 x 3.1 x 2 CM (cabinet)
Worldwide mix summer
A fat, gun-metal silver blue compound crystal from the very old find at Iyo. This was a gift to the collector Wallace Gould Levison of New York City in 1915. His label does not survive but the gift is recorded in his ledger. This crystal is very complex and recrystalized, it looks at quick glance like a badly broken piece but on inspection the termination is complete and most of the rough faces are in fact fully crystalized. There is only one area of da,
mage and that is limited to the backside. The Patina is the perfect, classic look of a vintage Japanese Stibnite and the complex form is oddly attractive too.
A big (228 gram) gem Topaz from Volodarskthat is strongly bi-colored. The termination is clear and glassy while the prism sides are frosted. It is possible to see through the crystal along the "C'" axis and it is almost all clean facet grade. Two natural cracks with a small separation are near the middle of the crystal, both are partial and rehealed. No damage at all, the crystal is 360 degree recrystallized and etched all around so it is a complete floater. The colors are a bit stronger in person as well, the cognac and blue tones are a very fine contrast and quite well presented. The Volodarsk pegmatites are famed for the great Heliodor and Beryl crystals found in the huge pockets over the past several decades, but the Topaz like this are also exceptional but much less common.
A well exposed Bournonite with complex twinning sits well exposed on a sulphide matrix with Dolomite crystals. Ex Charles Noll collection, this is a choice, old specimen from the classic locale of Pribram. The central crystal is 2.6 CM across., and has a few small Quartz crystals scattered on it. In unusually good condition as seen, the surface is also lustrous and has a fine patina.