Deaccessions from the Philadelphia Academy of Sciences

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PAS-166 - Greenockite on Cassiterite - SOLD
Siglo Veinte Mine, Llallagua, Bustillos Province, Potos� Department, Bolivia
small cabinet, 8.0 x 6.3 x 3.5 cm

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This piece has several rich pockets of dense microcrystallized orange/red greenockite, in protected cavities of cassiterite ore. A rare oldtime specimen from Llallagua with rich association of the very rare cadmian sulfide greenockite. I have not seen a specimen of this material for sale before, and in fact was not aware that the species had even been found here until I looked it up. This is one of two associated specimens (perhaps once joined), that were collected during the famous 4th Vaux-Academy expedition to Bolivia in 1929-1930, and comes with one of the two original labels that accompanied the box they were in all these years.

PAS-02 - Stephanite - SOLD
Cerro de Pasco, Pasco Province, Pasco Department, Peru
small cabinet, 9.1 x 8.7 x 4.8 cm

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A significant specimen for the locality, in that it features rare stephanite - which I had not before seen from here - in unusual elongated crystals to 2 cm. Although much damage is present, there are also some complete crystals and the piece overall is very rich and heavy, almost entirely silver ore and stephanite/Its smelt value is probably substantial, aside from that its a large crystallized mass of stephanite!

PAS-23 - Triploidite - SOLD
Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY)
small cabinet, 7.0 x 4.8 x 2.6 cm

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Triploidite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-23a.jpg]

Triploidite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-23a.jpg]

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Triploidite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-23b.jpg]

Triploidite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-23b.jpg]

A rare phosphate, from the TYPE LOCALITY circa late 1800s. The triploidite is the radiating, embedded, marginally crystalline reddish material, I think. I cannot speak to the quality myself, never having seen one. 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-24 - Sulvanite - SOLD
Mercur District (Camp Floyd District), Oquirrh Mts, Tooele Co., Utah, USA
small cabinet, 5.6 x 4.2 x 2.1 cm

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Sulvanite is a very rare copper vanadium sulfide which rarely forms nice large crystals. Here , we have sharp crystals to 6mm on nicely contrasting matrix of quartz. I hav enever seen crystals so big, but more importantly I amtold by those who do study such minerals, that these are VERY large or the species, and unusually well-isolated for display. An important locality specimen but beyond that, a super sulvanite for any locale.

PAS-25 - Bismuth ore from Wyoming Territory! - SOLD
near Laramie, Wyoming, USA
small cabinet, 8.3 x 6.3 x 3.8 cm

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A shockingly HEAVY specimen which surprises you when you lift it - heavier than lead by far. This is probably massive bismuth ore, with some oxidation coating of a green mineral atop.

PAS-27 - Fairfieldite - SOLD
Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY)
miniature, 5.2 x 4.8 x 3.4 cm

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Fairfieldite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-27a.jpg]

Fairfieldite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-27a.jpg]

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Fairfieldite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-27b.jpg]

Fairfieldite from Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut (TYPE LOCALITY) [db_pics/pics/pas-27b.jpg]

An oddly lightweight specimen of fairfieldite - a rare phosphate known in larger crystals now from other locales. BUT, this IS the Type Locality (in 1879) for this important rarity so its worth acquiring for that reason primarily. 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-28 - Jamesonite - SOLD
Nevada, USA
small cabinet, 7.5 x 5.4 x 4.1 cm

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For the jamesonite locality collectors out there, a hefty nugget of solid jamesonite from an unlikely locale! 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-30 - Smithsonite ps. Calcite - SOLD
Mineral Point, Iowa Co., Wisconsin, USA
small cabinet, 6.7 x 4.1 x 2.2 cm

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A locality specimen from this classic Wisconsin locality circa mid-1800s , in all likelihood. This is a pseudomorph of Smithsonite (not hydrozincite), having replaced calcite crystals. Most pseudos from here are of the heftier species smithsonite, as this one is, and I have seen many others of them from old collections.

PAS-31 - Clinochlore var. Corundophilite - SOLD
Chester Emery Mines, Chester, Hampden Co., Massachusetts, USA
small cabinet, 7.2 x 3.5 x 2.7 cm

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Corundophilite is an antique name for a "friend of corundum" in occurrence, Iron rich clinochlore, now discredited as not a full species on its own merit. This specimen has a display face rich with embedded, flat-laying crystals of the material. A small bit of another purple mineral is associated. A very interesting historical deposit which, although it produced a lot of minerals, we apparently know very little about today now that it is long gone. See this interesting article on MINDAT for more information on the site , and on what we do not know about it. 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-32 - Gold with Pyrite - SOLD
Douglass Island, Alaska, USA
cabinet, 12.0 x 5.4 x 4.6 cm

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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)

PAS-33 - Tiemannite - SOLD
Marysvale District (Marysvale Uranium area), Piute Co., Utah, USA
miniature, 5 x 5 x 3.9 cm

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Tiemannite is a VERY rare mercury selenide: simply HgSe. This is the classic locality for crystals: tiny black modified tetrahedra. This specimen hosts a few VERY choice, sharp crystals, unusually free of alteration coatings, on matrix. The crysta;ls are small, under 2mm, but very sharp and eye-visible. Another vug, with smaller crystals, lays beneath them. One suspects the museum numbering person mislabelled the piece, not recognizing the material and putting the museum accession number on the display face!

PAS-34 - Uranophane pseudo. Uraninite - SOLD
Mina "Angel", Sierra de Cordoba, Punilla Department, C�rdoba, Argentina
miniature, 3.9 x 3.8 x 2.3 cm

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Relatively sharp pseudomorphed crystals to about 1 cm, of Uranophane pseudo. Uraninite from this unusual location. Nice for the replacement from any locality, too!

PAS-36 - Muscovite with Magnetite inclusions - SOLD
Chandlers Hollow, Delaware, USA
cabinet, 32.0 x 22.9 x 0.2 cm

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A dramatic, really interesting solid sheet of muscovite, the kind of sheet which 200 years ago might have been used for a window even. It has mesmerizing inclusions of magnetite within it.

PAS-37 - Petalite - SOLD
Bolton Quarry, Bolton, Worcester Co., Massachusetts, USA
cabinet, 9.8 x 9.1 x 5.2 cm

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Petalite from Bolton Quarry, Bolton, Worcester Co., Massachusetts, USA [db_pics/pics/pas-37a.jpg]

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Petalite from Bolton Quarry, Bolton, Worcester Co., Massachusetts, USA [db_pics/pics/pas-37b.jpg]

An old specimen of massive petalite from the famous collection of Charles Shephard. ex.Charles Shepherd Collection (1804-1886), whom according to the Mineralogical Record Archive on him was with Benjamin Silliman's staff at Yale in 1827, as his assistant, and later as a lecturer on natural history at Yale (1830-1847) and then Amherst College. His large collection was donated to the Smithsonian, but afew specimens apparently found their way into the Academy collection, perhaps through trades with colleagues in the Philadelphia area.

PAS-39 - Monazite-(Ce) in Sillimanite - SOLD
Yantic Falls, Norwich, New London Co., Connecticut, USA
small cabinet, 8.1 x 6.0 x 2.8 cm

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A rare locality piece of monazite, in sillimanite. The sharp crystal noted is 5 or 6mm and fully crystallized. From the noted colletion of Samuel Ashmead.

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Rob Lavinsky, rob@irocks.com

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