An extraordinary and important old specimen of Brochantite from Chuquicamata, Ex Schortmann's and Immer Cook collection. The original label dates this to 1948-52, and by far it the best specimen I know of from this famed mine. This is certainly a serious contender for the best of specie outside of the 2016 Milpillas find. Even compared to the Mexican specimens this is a very significant stout cluster. The largest crystal is huge, 4.6 CM tall and quite thick. Close exam of the specimen finds a few slender needle crystals which are more typical of the specie. Under good magnification (40x) a few specks of blue that can be Krohnkite, Bellingerite or Aubertite etc are visible. There are areas of contacting making some rough edges but very little damage. A world class Copper secondary specimen.
Petzite with Gold etc.
#5 Level, Rex Mine, Gold Hill District, Boulder County
3.8 x 2.6 x 1.3 CM (small miniature/ large thumbnail (toenail))
new year 2021
A very rich small specimen of this rare Gold Telluride from Boulder County, Colorado. The Petzite here is in metallic masses and almost half of the specimen is Petzite. The remaining matrix is quite rich in tiny, bright specks of gold seen well under magnification. Two additional areas of golden massive mineral appears to be Coloradoite (not x-rayed but this was a common association and the visual match is very good). I can not find any clearly crystalized Hessite on this piece though a few spots at 20X look like crude crystal faces. A good sized (13.8 grams) and quite rich mass of this rare Gold Telluride from a classic USA locality.
Outstanding and unique esthetics, a super combination specimen from this classic locale, Serifos Island. Slender doubly terminated branching Quartz crystals sprout from Garnet crystals that are perched on Hedenbergite. In exceptional condition this is impressive from every angle. Hard to describe but the photos give a good idea of the arrangement. There is no damage which is just incredible for such a delicate piece.
From a find about 12 years ago in Yunnan Province, China. Pink Tourmalines with redder caps that came from the pegmatites of Gaoligong Shan is what seems to have been a mix of Elbaite and Liddiacoatite perhaps in zones. This piece shows the typical morphology of the find and has a nice bubble-gum color. The outer edges have contacts and chipping but there are several complete terminated crystals with no damage, the largest being 1 cm tall.
Fluorite - penetration twins
Blackdene Mine, Weardale
4.4 x 3.4 x 1.7 CM (miniature)
new year 2021
Light purple Fluorites with penetration twinning on miniature matrix. Vivid fluorescence which is typical for Fluorite from this region, and some fluorescence in daylight as well. The Fluorites are transparent and have a deeper purple core. Classic habit and in very good condition, these were found for many decades, and are unlike Fluorite from any place else.
An open vug or pocket lined with Hematite blades that are the matrix for several Pyrite crystals in Pyritohedal form. Classic Elba specimen that shows well the contrast between the two species and the crystal habit that is famed from Elba. This is an older piece with the Pyrite having maintained very good luster.
This is a smaller than usual thumbnail but an exceptional, complete, perfect, gem clear and sharp crystal of Carletonite. Carletonite is a rare mineral that is also beautiful and is only found at one locality, Mt St. Hilaire. It has been more than two decades since any specimens were found, these now only come from the breakup of old collections. Some few crystals exist that are larger but almost never gemmy or complete.
Beryl var. Goshenite
Erongo Mountain, Karibib
5.8 x 5.7 x 3.2 CM (cabinet)
new year 2021
White to colorless Beryl (Goshenite) in elongated crystals in a cluster with only a tiny sliver of matrix. Translucent to transparent, glassy and sharp, the crystals are terminated with flat basal tops. From the Erongo Mountains, it is surprising how rare colorless Beryl is compared to some of the many colored varieties. This is a nice addition to an Beryl suite. Most Goshenite we see from Erongo are tiny crystals usually with Schorl or Feldspar. This piece having pure Goshenite in good size (to 2.6 CM) is very unusual and significant.