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ex. Martin Zinn
Crystals of dark gray bournonite form the matrix for mirror bright, golden crystals of golden pyrite. These modified and striated crystals reach .5 cm across. The contrast in color and luster is outstanding. Very unusual locality piece!
ex. Martin Zinn
A fine druse of mirror bright, iridescent, pyrite has covered this specimen nearly completely, even around the sides of the matrix shard! The most obvious area is the coating on a 2.5 cm, doubly terminated calcite crystal. This is a fine and rare occurrence from Tasmania. BRIGHTER, and BETTER IN PERSON
Killer thumb - A translucent, softly-colored specimen of rhodo from this classic locale, complete all around!
ex. William Larson
A superb, sharp miniature with exceptional crystals of pyrite (rare for the County) which were replaced by the mineral limonite in perfect symmetry-preservation. These are VERY uncommon, and highly desired among county collectors. I am told that this is one of the very finest pieces from a small pocket found in the 1980s by mine owner Roland Reed.
ex. Philadelphia Academy of Natural Sciences
An unusual specimen with sharp hexagonal siderite crystals perched upon pyrite. Very unusual for the locality!
ex. Philadelphia Academy of Natural Sciences
A strange pyrite specimen (which in this rich form is rare for here), with a single crystal of sphalerite(?) perched atop.
ex. Philadelphia Academy of Natural Sciences
A large specimen with rich sparkly pyrite, and perhaps some gold in it - frankly I am not sure I can tell the difference, its probably minute here, but the museum seems to have been sure of it and so I pass on without testng how much is brassy pyrite and how much is real gold (probably minimal)
ex. Peter Bancroft
This amethyst rosette is a uniform, pastel lilac color, with good translucence and luster. The largest crystal is 2.0 cm in length. Enhancing this piece is a dusting of iridescent, pyrite crystals which average .1 cm across. The color of this amethyst is very close to the color of amethyst and pyrargyrite which appeared in Peter Bancroft’s first book and which proudly resides in the British Museum of Natural History, from Guanajuato.
ex. Peter Bancroft
This specimen with unusually bright, brassy yellow, intergrown pyrite crystals also contains a large crystal of bornite plunked in the middle! The black, sharp bornite crystal is 3.1 cm in length. AMAZING size and quality for the bornite, especially from this locality! this is a world class piece, though, beyond its significance for the locale! What makes it so special is that often the bornites from here or anywhere are on boring matrix. this one has pizzazz!
ex. Peter Bancroft
These are slightly elongated cubes of brassy, mirror bright, unmodified, pyrite. This habit, from Peru, may actually be rarer than that of the octahedrons. The largest crystal is doubly terminated and measures 4.9 cm in length. They are nearly pristine on the display face, with just minor edge wear there and some on back sides as well (it IS there, but it doesnt detract too much, to me). This is a superior pyrite specimen WAY BEYOND the average and mass-produced material. Seldom do you see them so finely articulated, and in a cluster with such individuality
ex. Peter Bancroft
A mirror bright, lustrous, brassy yellow cube of pyrite, to 4.0 cm across acts as a host for a smaller crystal of the same species which is obliquely, and aesthetically, perched on the larger crystal. Common material, but still and all one of the most amazing minerals in the world for its ability to impress layment with the stark symmetry (that so few outsiders believe us about, when we say it is natural!). A common mineral and locality, but a very nice example, here.
ex. Peter Bancroft
I must say that this is one of the most aesthetic, scalenohedral calcite specimens I have seen from Brushy Creek. A group of intergrown, lustrous, translucent, dark gray, calcite crystals, to 5.0 cm in length, have overgrowths of finely crystallized, IRIDESCENT AND MULTICOLORED, pyrite. On the largest calcite crystal with pyriteovergrowth, a later generation of calcite crystals, in a "rabbit ear" pattern is perched aesthetically. In addition, the largest calcite crystal exhibits a wonderful phantom. This specimen highlights the exquisite taste of Peter Bancroft. This is form older finds. The mine was reopened for specimens in the late 1980s. Until that time, a piece such as this would have been even more rare than now. It is still VERY good, mind you! But i can see this costing even more money at the time.
ex. Peter Bancroft
Iridescent, striated, modified cubes of pyrite, to .8 cm across, are nestled down among flower-like, clusters of snow white, translucent, calcite. The calcite clusters average 1 cm across. BEAUTIFUL and stark combination! This is old material, in a style not found in modern mining here.
ex. Peter Bancroft
This has to be th emost elegant, sculptural cluster pulled out of the mine, or damn close! It is simply exquisite in form, and of a quality so high it makes for a competition-class pyrite small cabinet piece. The speicmen is prominently figured in the chapter on Butte mines, in Gem & Crystal Treasures .
This specimen is stunning for the species, with unusually distinct, well-formed crystals to 1.5 cm arrayed in an (also unusual) radial cluster on minimal matrix. Usually these are blocky crystals on massive rock, not so displayable. This fine piece, though, is one of the more display-worthy examples of the species I have seen. The leftmost crystal was loose, wiggling, and then came off in handling so is now repaired (as a lock-fit repair perfectly to its original site). The crystals are textbook-sharp in form, and have (as you can see in the photos) translucent golden-colored terminations.
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share specimen![Bournonite with Pyrite (Utah!) from Silver King Mine, Summit County, Utah, USA [db_pics/pics/mz208a.jpg]](db_pics/pics/mz208a.jpg)
![Bournonite with Pyrite (Utah!) from Silver King Mine, Summit County, Utah, USA [db_pics/pics/mz208b.jpg]](db_pics/pics/mz208b.jpg)
![Pyrite on Calcite from Renison Bell Mine, near Dundas, Tasmania, Australia [db_pics/pics/mz283a.jpg]](db_pics/pics/mz283a.jpg)
![Rhodochrosite with Pyrite from Silverton, Colorado, USA [db_pics/pics/nex64a.jpg]](db_pics/pics/nex64a.jpg)
![Rhodochrosite with Pyrite from Silverton, Colorado, USA [db_pics/pics/nex64b.jpg]](db_pics/pics/nex64b.jpg)
![Limonite ps. After Pyrite from Elizabeth R. Mine, Chief Mountain, Pala District, San Diego Co., California, USA [db_pics/new09/pala25b.jpg]](db_pics/new09/pala25b.jpg)
![Limonite ps. After Pyrite from Elizabeth R. Mine, Chief Mountain, Pala District, San Diego Co., California, USA [db_pics/new09/pala25c.jpg]](db_pics/new09/pala25c.jpg)
![Limonite ps. After Pyrite from Elizabeth R. Mine, Chief Mountain, Pala District, San Diego Co., California, USA [db_pics/new09/pala25d.jpg]](db_pics/new09/pala25d.jpg)
![Siderite, on Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-139a.jpg]](db_pics/pics/pas-139a.jpg)
![Siderite, on Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-139b.jpg]](db_pics/pics/pas-139b.jpg)
![Siderite, on Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-139c.jpg]](db_pics/pics/pas-139c.jpg)
![Siderite, on Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-139d.jpg]](db_pics/pics/pas-139d.jpg)
![Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-141a.jpg]](db_pics/pics/pas-141a.jpg)
![Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-141b.jpg]](db_pics/pics/pas-141b.jpg)
![Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-141c.jpg]](db_pics/pics/pas-141c.jpg)
![Pyrite from Llallagua, La Joya district, Cercado Province, Oruro Department, Bolivia [db_pics/pics/pas-141d.jpg]](db_pics/pics/pas-141d.jpg)
![Gold with Pyrite from Douglass Island, Alaska, USA [db_pics/pics/pas-32a.jpg]](db_pics/pics/pas-32a.jpg)
![Gold with Pyrite from Douglass Island, Alaska, USA [db_pics/pics/pas-32b.jpg]](db_pics/pics/pas-32b.jpg)
![Gold with Pyrite from Douglass Island, Alaska, USA [db_pics/pics/pas-32c.jpg]](db_pics/pics/pas-32c.jpg)
![Amethyst with Pyrite from Guanajuato, Guanajuato, Mexico [db_pics/pics/pb18a.jpg]](db_pics/pics/pb18a.jpg)
![Amethyst with Pyrite from Guanajuato, Guanajuato, Mexico [db_pics/pics/pb18b.jpg]](db_pics/pics/pb18b.jpg)
![Bornite with Pyrite from Butte, Montana, USA [db_pics/pics/pb20a.jpg]](db_pics/pics/pb20a.jpg)
![Bornite with Pyrite from Butte, Montana, USA [db_pics/pics/pb20b.jpg]](db_pics/pics/pb20b.jpg)
![Pyrite from Huanzala Mine, Dos de Mayo Province, Huanuco Department, Peru [db_pics/pics/pb29a.jpg]](db_pics/pics/pb29a.jpg)
![Pyrite from Navajun, Logrono, Spain [db_pics/pics/pb3a.jpg]](db_pics/pics/pb3a.jpg)
![Calcite with Pyrite from Brushy Creek Mine, Reynolds County, Missouri, USA [db_pics/pics/pb4a.jpg]](db_pics/pics/pb4a.jpg)
![Calcite with Pyrite from Brushy Creek Mine, Reynolds County, Missouri, USA [db_pics/pics/pb4b.jpg]](db_pics/pics/pb4b.jpg)
![Calcite with Pyrite from Brushy Creek Mine, Reynolds County, Missouri, USA [db_pics/pics/pb4c.jpg]](db_pics/pics/pb4c.jpg)
![Calcite with Pyrite from Brushy Creek Mine, Reynolds County, Missouri, USA [db_pics/pics/pb4d.jpg]](db_pics/pics/pb4d.jpg)
![Calcite with iridescent Pyrite from Santa Eulalia, Chihuahua, Mexico [db_pics/pics/pb6a.jpg]](db_pics/pics/pb6a.jpg)
![Calcite with iridescent Pyrite from Santa Eulalia, Chihuahua, Mexico [db_pics/pics/pb6b.jpg]](db_pics/pics/pb6b.jpg)
![PYRITE (shown in book) from Leonard Mine, Butte, Montana, USA [db_pics/pics/pb75a.jpg]](db_pics/pics/pb75a.jpg)
![PYRITE (shown in book) from Leonard Mine, Butte, Montana, USA [db_pics/pics/pb75b.jpg]](db_pics/pics/pb75b.jpg)
![PYRITE (shown in book) from Leonard Mine, Butte, Montana, USA [db_pics/pics/pb75c.jpg]](db_pics/pics/pb75c.jpg)
![VALENTINITE on pyrite from San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia [db_pics/pics/rare-09-34a.jpg]](db_pics/pics/rare-09-34a.jpg)
![VALENTINITE on pyrite from San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia [db_pics/pics/rare-09-34b.jpg]](db_pics/pics/rare-09-34b.jpg)
![VALENTINITE on pyrite from San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia [db_pics/pics/rare-09-34c.jpg]](db_pics/pics/rare-09-34c.jpg)