The vast collection of minerals--smooth turquoise smithsonite from New Mexico, spiky orange crocoite
from Tasmania, dazzling purple amethyst from Uruguay, and large specimens of sulfur from Sicily--are recommended for a viewing at the Harvard Museum of Natural History.
John Bradshaw, Coast-to-Coast Rare Stones International, Nashua, New Hampshire, USA, for 21 bags containing part-cut crystals of: apatite (Canada and Mexico), cassiterite (Namibia), celestine (Kansas, USA), cerrusite (Namibia), crocoite
(Tasmania, Australia), diaspore (Turkey), oligoclase (Kenya), pollucite (Conneticut, USA), scheelite (Pakistan and Arizona, USA), smithsonite (Namibia), sphalerite (Spain), tourmaline (Maine, USA, and Afghanistan), tugtupite (Greenland), willemite/leucophoenicite (New Jersey, USA) and zincite on calcite (New Jersey); and also for 95 faceted mixed-shape tourmalines, mostly pink, green and blue.
You'll be understanding if, when you obtain a copy of the book, you turn to the Santa Tereza chrysoberyl (page 106: Keith Proctor collection), Morro Velho gold (page 150: Alvaro Lucio collection), Lavra Caba Saco rutile (page 288: Luiz Menezes collection), Brumado dolomite (page 317: Julio Landmann collection), Ouro Preto crocoite
(page 331: Alvaro Lucio collection), Sapo mine fluorapatite (page 347: Jim and Gail Spann collection), Malacacheta autunite (page 357: Luiz Menezes collection), or nearly any one of the stunning specimens of topaz, elbaite, beryl, euclase, etc.
Previous work showed that some bacterial species, including a strain of Pseudomonas chromatophila, can corrode metals present in solid crocoite
, a mineral that artists, including Vincent Van Gogh and Marc Chagall, have used to make yellow or orange paint.
4]) and synthetic crocoite
or lead chromate ([PbCrO.
To mineral collectors, it is the end-of-the-earth place where the world's finest crocoite
specimens have been found for more than a century, and are still being found, in small, mostly defunct lead mines near the town of Dundas.
The fluorites, pink quartzes, even the delicate greens of some spodumene, the faintly blushing calcites and the rhodochrosites, also sensibly succumb to these exposures, while it is a matter of common annoyance to find that the realgars, cerargyrites, proustites, cuprites, crocoite
, and sulphurs go through changes that slowly alter their substance, texture and appearance.
The black gravel made an interesting yet non-intrusive "matrix" for all sorts of fabulous things, from nuggets of fire opal to elaborate jewelry pieces to wonderful specimens of (for example) green mimetite from the Elura mine, crocoite
from Tasmania, and dozens of species from Broken Hill.
, scolecite, mesolite, cerussite--such specimens and other fragile delicacies are highly desired by avid mineral collectors.
com) was showing off what was left of a group of about 40 elite crocoite
specimens he had recently scored; by Main Show time only eight of them remained unsold.
Cases on special Australian topics included several by the Western Australian Museum (niobium and tantalum minerals of Western Australia; minerals of Whim Creek; Australian gold nuggets and crystal specimens); Virginia Tech (Argyle diamonds and inclusions in same); Harvard (Australian gold); the Geological Survey of New South Wales and the Mineralogical Society of New South Wales (both showing assorted New South Wales minerals); Dehne McLaughlin and Paul Melville (minerals of the Northern Territory); and Adelaide Mining Company (a huge and dramatic case of crocoite
from the Adelaide mine).
Kunz, "unusually strong in the rare and expensive minerals such as wulfenite, crocoite
, matlockite, vanadinite, and all the metallic minerals.