Deaccessions from the Philadelphia Academy of Sciences

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PAS-91 - Danalite - SOLD
Rockport, Essex Co., Massachusetts, USA
cabinet, 14.0 x 12.4 x 7.1 cm

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Danalite is a member of the helvite group, rarely crystallizing. This is a large specimen with a massive embedded crystal of beautiful pink-red danalite, showing some fracture faces. What is more, it is from the old TYPE LOCALITY (from which it was described in 1866). A VERY rare and important old US specimen

PAS-94 - Parisite-(Ce) - SOLD
Quincy, Norfolk Co., Massachusetts, USA
small cabinet, largest 8.0 x 4.9 x 3.5 cm

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This offering is a lot-set of FIVE specimens gifted to the Academy by great mineralogist Charles Palache. These specimens host rare Parisite crystals from Massachusetts. The first and more important specimen is shown in the top 2 rows of photos, where you can see it has elongated parisite crystals to nearly 1 cm. 2 additional specimens, including one with unusual barrel-headed calcite crystals (and parisite down between them), are shown at bottom. Another two strictly reference samples are included as well (not shown). Along with the anatase above also provided by Palache, an interesting mineralogical oddity from Massachusetts. From the MINDAT entry on this locality: Pegmatite pipes in a riebeckite-aegirine granite. Granite quarry opened before 1856. (Note: Often simply referred to as the Quincy Quarry.

PAS-99 - Opal var. Geyserite - SOLD
Yellowstone National Park, Park Co., Wyoming, USA
miniature, 4.7 x 4.2 x 1.6 cm

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So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with the original label. NOTE: Collecting in the park is prohibited today.

PAS-100 - Opal var. Geyserite - SOLD
Yellowstone National Park, Park Co., Wyoming, USA
miniature, 3.7 x 2.8 x 1.9 cm

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Opal var. Geyserite from Yellowstone National Park, Park Co., Wyoming, USA [db_pics/pics/pas-100a.jpg]

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Opal var. Geyserite from Yellowstone National Park, Park Co., Wyoming, USA [db_pics/pics/pas-100b.jpg]

So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

PAS-101 - Geyserite - SOLD
Yellowstone National Park
thumbnail, 2.7 x 2.6 x 1.9 cm

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Geyserite from Yellowstone National Park [db_pics/pics/pas-101a.jpg]

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Geyserite from Yellowstone National Park [db_pics/pics/pas-101b.jpg]

So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

PAS-102 - Geyserite - SOLD
Yellowstone National Park
thumbnail, 3.0 x 2.6 x 2.2 cm

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Geyserite from Yellowstone National Park [db_pics/pics/pas-102a.jpg]

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Geyserite from Yellowstone National Park [db_pics/pics/pas-102b.jpg]

So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

PAS-103 - Geyserite - SOLD
Yellowstone National Park
thumbnail, 3.3 x 3.0 x 2.4 cm

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Geyserite from Yellowstone National Park [db_pics/pics/pas-103a.jpg]

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Geyserite from Yellowstone National Park [db_pics/pics/pas-103b.jpg]

So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

PAS-104 - Geyserite - SOLD
Yellowstone National Park
miniature, 3.5 x 2.8 x 1.4 cm

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Geyserite from Yellowstone National Park [db_pics/pics/pas-104a.jpg]

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Geyserite from Yellowstone National Park [db_pics/pics/pas-104b.jpg]

So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

PAS-107 - Paralaurionite - SOLD
Caracoles, Sierra Gorda District, Tocopilla Province, Antofagasta Region, Chile
miniature, 5.2 x 4.3 x 2.9 cm

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Here we have sharp gray sub-mm crystals of this rare lead species inside a vug, seemingly perched on another mineral (anglesite?).

PAS-108 - Bromargyrite ps. after Silver - SOLD
Chanarcillo, Copiap� Province, Atacama Region, Chile
miniature, 5.2 x 4.5 x 2.3 cm

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Unusual "ropey" crystals of Bromargyrite nestled in a specimen that itself has not the shape of random matrix to it...all suggesting this is a solid piece of pure Bromargyrite pseudomorph after silver - quite in line with the locality, but an unusual occurrence nonetheless. From the collection of notable museum supporter William Sansom Vaux.

PAS-109 - Chalcomenite - SOLD
Pakajake Canyon (Pacajake Canyon), Chayanta Province, Potos� Department, Bolivia
miniature, 5.2 x 4.5 x 2.3 cm

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Sorry, we have no images of this specimen at present.

PAS-111 - Bromargyrite - SOLD
Chanarcillo, Copiap� Province, Atacama Region, Chile
small cabinet, 6.0 x 4.3 x 3.1 cm

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A rounded, robust, thick growth of the silver halide bromargyrite, from this classic silver mine which was intensely worked in the late 1800s. A bromargyrite from here of such richness is highly uncommon! And it is somewhat aesthetic.

PAS-86 - Cubanite with Maucherite, Valleriite - SOLD
Mackinaw Mine, Monte Cristo, Snohomish County, Washington, USA
cabinet, 12.6 x 9.2 x 5.1 cm

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A hefty ore specimen, with probably tons of material stuck inside it as well as what you see on the outside, judging by the look of it. I think the cubanite (and associated more rare species) fills thin fracture seams within. On the exposed main face, there are dozens of thin, flatlaying cubanite crystals to 7mm in size. I had never seen cubanite from a US locality, before. According to the MINDAT entry on this mine, it produced ore from 1900-1910. Apparently this specimen was exchanged to the Academy by the Smithsonian. I am not sure if the reference on the Smithsonian label indicates this particular piece was referenced in 1958, or just the locality itself, in that article.

PAS-84 - Ulexite - SOLD
Arequipa, Arequipa Province, Arequipa Department, Peru
small cabinet, 9 x 8.5 x 5.0 cm

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Hayesine is a discredited species name now shown to be the same as the previously described species Ulexite. This is, however, a VERY fine, rich, and large example of ulexite from Peru! It is crystallized in globular clusters, and complete all around.

PAS-46 - Aramayoite - SOLD
Animas Mine, Atocha-Quechisla District, Sud Chichas Province, Potos� Department, Bolivia (TYPE LOCALITY)
small cabinet, 6.6 x 5.0 x 2.9 cm

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Aramayoite is a very rare silver sulfide species containing tin, and bismuth. This is material fro mthe type locality from which it was described in 1926 , collected only a few years later in 1929-1930 on the fourth Vaux-family-sponsored mineralogical expedition to South America. This is a rich sample of silver and tin ore which has a vug of pocket crystals and also exposed, flay-laying embedded crystals of aramayoite to 8mm which show mettalic, mirror-like faces on the upper-right part of the specimen.

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Rob Lavinsky, rob@irocks.com

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