Deaccessions from the Philadelphia Academy of Sciences

US$ € EURO ¥ YEN £ POUND CAN$ AUS$
(click on a page number to go to that page:)

page 8 / 12 - prev - 167 specimens selected - next - bottom - back to the Galleries

PAS-40 - Ilmenite (var. Manaccanite and Washingtonite) - SOLD
Washington, Litchfield Co., Connecticut, USA
small cabinet, 7.2 x 5.7 x 3.7 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

This specimen features several robust crystals of ilmenite, variously named Manaccanite and then renamed Washingtonite for the prominent locality at Washington, Litchfield Co., Connecticut. However, this is today considered to be an iron-rich variety of the species ilmenite rather than its own species . Sharp crystals to 2.7 cm wide and about 1 cm thick make this a relatively attractive, and quite good, US ilmenite specimen.

PAS-41 - Tungstite - SOLD
San Antonio de Calacalani mine, Cercado Province, Oruro Department, Bolivia
cabinet, 12.7 x 9.7 x 3.3 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

A rich, showy, very fine specimen of this rare tungsten oxide hydroxide. Note that the location is our best guess translation of the label, based on published photos of tungstite from Bolivia from other collections such as Harvard.

PAS-01 - Cassiterite (iridescent) - SOLD
Llallagua, Bustillos Province, Potos� Department, Bolivia
cabinet, 10.4 x 6.2 x 5.6 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

A remarkably odd cassiterite with rainbow iridescence on the crystal surfaces, which sit protected inside a 2.5 cm vug in matrix of ore material. Very unusual, I haven't seen the effect before in this species.

PAS-44 - Zunyite - SOLD
Silver City, Tintic District, East Tintic Mts, Juab County, Utah, USA
small cabinet, 8.3 x 5.5 x 3.9 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

This strange silicate forms pyramid-shaped crystals that are sharp and unusual. Usually the species is gray to white in color from other locales but here show with brown-red color. This specimen is one of several obtained by breaking open a single larger vug donated to the museum in the early 1900s, and features many sharp crystals to 3 mm on all sides of the specimen. We obtained 2 specimens with 2 labels, as shown here and on item #42

PAS-22 - Genthite - SOLD
Jackson Co., North Carolina, USA
small cabinet, 9.1 x 5.6 x 4.9 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

A vein of massive yellow genthite, a Kaolinite-Serpentine group mineral related to chrysotile, in sandstone. From the noted collection of William Drown, whom according to the Mineralogical Record Archive on him was an umbrella manufacturer who used his fortune to amass a collection of some 6000 mineral specimens. His collection was kept by his family for a generation after his death and then donated in 1918.

PAS-21 - Natrophilite with lithiophilite - SOLD
Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY)
miniature, 3.7 x 2.2 x 1.9 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

A rare phosphate, from the TYPE LOCALITY circa late 1800s. ex. GJ Brush collection at Yale, so obviously this was considered an important enough representative example that the Academy had to trade for it, to get the species. I cannot speak to the quality myself, never having seen one, but Brush was pretty well known for good taste...Specimen was sent to Dr. Mark Feinglos who reports the following: Clearly Yale didn't send them their best piece! There is some on there, though, although not very much, but it is a nice specimen in particular because it has a few sharp microxls of lithiophilite (rare in xls; I only had some from Foote Mine), and some nice metaswitzerite, as well as some acicular tufts of a yellow mineral I can't identify, which isn't a form natrophilite should have

PAS-03 - Chalcophyllite - SOLD
Mananna, 10m N.E. of Ouro Preto, Minas Gerais, Brazil
small cabinet, 7.9 x 6.3 x 3.1 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

I would never have imagined this copper species from this gem mining district but here we have a rather specific locality given, too! This specimen of drusy crystallized chalcophyllite is a rarity: the only one I have handled from Brazil. Although the crystals are small it is overall a pretty, sparkling specimen with lots of color coverag. After consulting a few others, I could not find any specimens of this material elsewhere for comparison. However, I have no doubt it is legitimate. It is simply too strange to make up and every now and then, we do get some copper mineralization in Brazil turn up - though it is rare.

PAS-04 - Manganite - SOLD
Lake Superior, Michigan, USA
small cabinet, 7.7 x 7.6 x 4.6 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

An old specimen with interlocking sprays of manganite, to 2.5 cm, embedded in ore matrix. Classic old material from Michigan's brief heyday of mining a few other elements besides copper, but rarely seen today on the market

PAS-05 - Clinoclase - SOLD
Missoula County, Montana, USA
small cabinet, 7.2 x 5.1 x 3.1 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

A very rich and colorful specimen of microcrystalline clinoclase from an unlikely locality I wouldn't have thought of by today's hit list for the species....Missoula , Montana! Although the crystals are micros, the piece overall is rich and colorful, and obviously a historic rarity for the mining districts of Montana.

PAS-06 - Teallite and Wurtzite on Cassiterite - SOLD
Ichocollo Mine (Monserrat Mine), Monserrat-Antequera district, Poop� Province, Oruro Department, Bolivia
miniature, 4.6 x 2.8 x 3.4 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

Collected from one of the famous Vaux expeditions of the early 1900's, this is a rare matrix teallite specimen featuring a pocket-growth teallite crystal measuring 1.3 cm long, perched safely in a protected vug of wurtzite crystals , all in a matrix of cassiterite ore. The slender yellow crystals may be greenockite but I have not had them analysed so that is a bonus,if so. Freestanding , sharp teallite crystals are very uncommon, and this is a good one as it has matrix hosting it. Teallite normally forms as foliated masses or contacted ugly lumpy pieces, so this is, for what it is, quite a beauty. According to Mindat, this was an early locality for finds of teallite and material from this district provided type specimens of the species. This locality is reported as far back as The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University, 1837-1892. As an additional note, I am pretty certain with my contacts that there have been no new finds of TEALLITE in this region despite extensive recent specimen collecting for species such as potosiite, zinkenite, and andorite which were found. MUCH BETTER IN PERSON!

PAS-07 - Pentlandite - SOLD
Sudbury, Ontario, Canada
small cabinet, 7.2 x 5.9 x 3.1 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

This is a rich ore sample, containing a mixture of several sulfide minerals: pentlandite, chalcopyrite, and pyrrhotite. Self-collected by curator Sam Gordon, in 1932! The label probably is in his handwriting

PAS-08 - Jamesonite - SOLD
Porvenir Mine, Huanuni, Dalence Province, Bolivia
cabinet, 11.2 x 11.0 x 3.2 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
Jamesonite from Porvenir Mine, Huanuni, Dalence Province, Bolivia [db_pics/pics/pas-08a.jpg]

CLICK HERE FOR LARGER IMAGE:
Jamesonite from Porvenir Mine, Huanuni, Dalence Province, Bolivia [db_pics/pics/pas-08b.jpg]

A massively heavy specimen of pure jamesonite, with flat-laying acicular crystals atop ore, from one of the famus Vaux expeditions in the early 1900s. Rare in such size and richness. There may be other rare species present here, to be identified from thin sections, as much of interest was found in the old deposits here.

PAS-09 - Haggite - SOLD
Ambrosia Lake area, Grants District, McKinley County, New Mexico, USA
small cabinet, 7.6 x 6.2 x 4.3 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

Haggite is a rare hydrated vanadate, present here as black rims of microcrystals around some yellow mineralization.

PAS-10 - Topaz - SOLD
Old Tungsten Mine (Old Mine Park), Trumbull, Fairfield Co., Connecticut, USA
cabinet, 11.3 x 5.5 x 5.3 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
CLICK HERE FOR LARGER IMAGE:	CLICK HERE FOR LARGER IMAGE:

A huge, rocklike topaz crystal , which is actually typical of old material found in Connecticut in the early 1800s and even prior. Perhaps something is included within the topaz to give it the earthy look? this is a large specimen with a contact termination on one end. Ugly, but historic - this is the first tungsten deposit discovered in North America!

PAS-11 - Copiapite - SOLD
Alcaparrosa Mine, Cerritos Bayos, Calama, El Loa Province, Antofagasta Region, Chile
cabinet, 11.9 x 7.4 x 4.0 cm

share specimen

ex. Philadelphia Academy of Natural Sciences

CLICK HERE FOR LARGER IMAGE:
Copiapite from Alcaparrosa Mine, Cerritos Bayos, Calama, El Loa Province, Antofagasta Region, Chile [db_pics/pics/pas-11a.jpg]

Copiapite from Alcaparrosa Mine, Cerritos Bayos, Calama, El Loa Province, Antofagasta Region, Chile [db_pics/pics/pas-11a.jpg]

CLICK HERE FOR LARGER IMAGE:
Copiapite from Alcaparrosa Mine, Cerritos Bayos, Calama, El Loa Province, Antofagasta Region, Chile [db_pics/pics/pas-11b.jpg]

Copiapite from Alcaparrosa Mine, Cerritos Bayos, Calama, El Loa Province, Antofagasta Region, Chile [db_pics/pics/pas-11b.jpg]

Super-sharp, lustrous , mica-like crystals of copiapite in unusually big sizes to 8mm, richly decorate this large matrix specimen. It can perhaps be broken into several pieces, each equally good and rich for the species. I have not often seen such nice, isolated crystals. The piece is just plain attractive on its own merits, but is also significant, I think.

(click on a page number to go to that page:)

page 8 / 12 - prev - 167 specimens selected - next - top - back to the Galleries

Rob Lavinsky, rob@irocks.com

Powered by http://mineralwebsites.com

Mineral Specimens by species; or by specimen id.

All Content and Design ©1996-2012 The Arkenstone

Powered by http://mineralwebsites.com