Pseudomorphs!

Presented is a gallery of nothing but pseudomorphs.  Pseudomorphs are specimens in which one mineral is replaced by another. The shape of the original mineral remains unchanged, however properties such as color, hardness, and chemistry change to those of the replacing mineral. 



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LL331 - Limonite after Pyrite $ 75 (=~ CAN$ 103)
Pelican Point, Utah Co., Utah, USA
thumbnail - 2.2 x 2 x 2 cm


(click on an image to enlarge)

Limonite after Pyrite from Pelican Point, Utah Co., Utah, USA [db_pics/pics/LL331a.jpg] Limonite after Pyrite from Pelican Point, Utah Co., Utah, USA [db_pics/pics/LL331b.jpg] Limonite after Pyrite from Pelican Point, Utah Co., Utah, USA [db_pics/pics/LL331c.jpg] Limonite after Pyrite from Pelican Point, Utah Co., Utah, USA [db_pics/pics/LL331d.jpg]

Fine quality, complete pseudomorph of Limonite after Pyrite. Striations on the surface from the original Pyrite are evident. From the Judy & Chris Cook pseudomorph collection.


M462 - Pyrite after Pyrhottite $ 150 (=~ CAN$ 206)
Zacatecas, Mexico
miniature - 4.7 x 3.5 x 2.5 cm


(click on an image to enlarge)

Pyrite after Pyrhottite from Zacatecas, Mexico [db_pics/pics/M462a.jpg] Pyrite after Pyrhottite from Zacatecas, Mexico [db_pics/pics/M462b.jpg] Pyrite after Pyrhottite from Zacatecas, Mexico [db_pics/pics/M462c.jpg] Pyrite after Pyrhottite from Zacatecas, Mexico [db_pics/pics/M462d.jpg]

Thin blades of Pyrite that have pseudomorphed after Pyrhottite crystals. Bright and lustrous with a few small Quartz crystals associated.


M731 - Prehnite, Stilbite on Laumontite after Anhydrite $ 150 (=~ CAN$ 206)
Prospect Park, New Jersey, USA
miniature - 4.8 x 4 x 3.5 cm


(click on an image to enlarge)

Prehnite, Stilbite on Laumontite after Anhydrite from Prospect Park, New Jersey, USA [db_pics/pics/M731a.jpg] Prehnite, Stilbite on Laumontite after Anhydrite from Prospect Park, New Jersey, USA [db_pics/pics/M731b.jpg] Prehnite, Stilbite on Laumontite after Anhydrite from Prospect Park, New Jersey, USA [db_pics/pics/M731c.jpg] Prehnite, Stilbite on Laumontite after Anhydrite from Prospect Park, New Jersey, USA [db_pics/pics/M731e.jpg] Prehnite, Stilbite on Laumontite after Anhydrite from Prospect Park, New Jersey, USA [db_pics/pics/M731f.jpg] Prehnite, Stilbite on Laumontite after Anhydrite from Prospect Park, New Jersey, USA [db_pics/pics/M731g.jpg]

Green Prehnite and tan Stilbite crystals on a cluster of Laumontite after Anhydrite crystals. Small Calcite crystals are also present. Well crystallized all around.


D469 - Chalcocite, Malachite after Azurite, Malachite $ 175 (=~ CAN$ 240) SOLD
Ajo, Pima Co., Arizona, USA
thumbnail - 3 x 1.8 x 1.3 cm


(click on an image to enlarge)

Chalcocite, Malachite after Azurite, Malachite from Ajo, Pima Co., Arizona, USA [db_pics/pics/D469a.jpg] Chalcocite, Malachite after Azurite, Malachite from Ajo, Pima Co., Arizona, USA [db_pics/pics/D469b.jpg] Chalcocite, Malachite after Azurite, Malachite from Ajo, Pima Co., Arizona, USA [db_pics/pics/D469c.jpg] Chalcocite, Malachite after Azurite, Malachite from Ajo, Pima Co., Arizona, USA [db_pics/pics/D469d.jpg]

Unusual composite specimen of a Chalcocite crystal with a 'veneer' on the front face of Malachite after Azurite. A spray of fibrous Malachite extends off the right side.


CT270 - Chrysocolla after Malachite after Azurite with Wulfenite $ 600 (=~ CAN$ 823)
Whim Creek, Western Australia, Australia
small cabinet - 7 x 5.5 x 4 cm


(click on an image to enlarge)

Chrysocolla after Malachite after Azurite with Wulfenite from Whim Creek, Western Australia, Australia [db_pics/pics/CT270a.jpg] Chrysocolla after Malachite after Azurite with Wulfenite from Whim Creek, Western Australia, Australia [db_pics/pics/CT270b.jpg] Chrysocolla after Malachite after Azurite with Wulfenite from Whim Creek, Western Australia, Australia [db_pics/pics/CT270c.jpg] Chrysocolla after Malachite after Azurite with Wulfenite from Whim Creek, Western Australia, Australia [db_pics/pics/CT270d.jpg] Chrysocolla after Malachite after Azurite with Wulfenite from Whim Creek, Western Australia, Australia [db_pics/pics/CT270f.jpg]

A 3.2cm crystal of the double pseudomorph of Chrysocolla that has replaced a crystal of Malachite after Azurite. Scattered crystals of orange Wulfenite are present on the matrix.


CT336 - Azurite, Malachte after Azurite $ 300 (=~ CAN$ 412)
Tsumeb, Namibia
small cabinet - 6.5 x 4 x 3.5 cm


(click on an image to enlarge)

Azurite, Malachte after Azurite from Tsumeb, Namibia [db_pics/pics/CT336a.jpg] Azurite, Malachte after Azurite from Tsumeb, Namibia [db_pics/pics/CT336b.jpg] Azurite, Malachte after Azurite from Tsumeb, Namibia [db_pics/pics/CT336c.jpg] Azurite, Malachte after Azurite from Tsumeb, Namibia [db_pics/pics/CT336d.jpg]

Sharp crystals of blue Azurite intermixed with green crystals of Malachite after Azurite pseudomorphs on a light matrix with additional yellow/green mineralization. Undamaged crystals with pseudomorphs that reach 2.2cm, some of which are double-terminated.


CT512 - Achtaragdite $ 120 (=~ CAN$ 165)
Akhtaragda River mouth, Vilyui River Basin, Mirninsky District, Sakha Republic (Yakutia), Russia
thumbnail - 1.5 x 1.3 x 1.2 cm


(click on an image to enlarge)

Achtaragdite from Akhtaragda River mouth, Vilyui River Basin, Mirninsky District, Sakha Republic (Yakutia), Russia [db_pics/pics/CT512a.jpg] Achtaragdite from Akhtaragda River mouth, Vilyui River Basin, Mirninsky District, Sakha Republic (Yakutia), Russia [db_pics/pics/CT512b.jpg] Achtaragdite from Akhtaragda River mouth, Vilyui River Basin, Mirninsky District, Sakha Republic (Yakutia), Russia [db_pics/pics/CT512c.jpg] Achtaragdite from Akhtaragda River mouth, Vilyui River Basin, Mirninsky District, Sakha Republic (Yakutia), Russia [db_pics/pics/CT512d.jpg]

Achtaragdite is a rare pseudomorph of a hydrogrossular-chlorite-carbonate mineral after what is believed to be Helvite. This is a little understood psuedo likely found many decades ago at the type locality for Grossular garnet in Siberia. It is a fine example with a well formed tetrahedron of the form of the former Helvite crystal. 


CT306 - Sulfur after Selenite $ 200 (=~ CAN$ 274) SOLD
Silver Peak, Esmeralda Co., Nevada, USA
thumbnail - 3 x 1.5 x 0.8 cm


(click on an image to enlarge)

Sulfur after Selenite from Silver Peak, Esmeralda Co., Nevada, USA [db_pics/pics/CT306a.jpg] Sulfur after Selenite from Silver Peak, Esmeralda Co., Nevada, USA [db_pics/pics/CT306b.jpg] Sulfur after Selenite from Silver Peak, Esmeralda Co., Nevada, USA [db_pics/pics/CT306c.jpg]

Rare and unusual pseudomorph of Sulfur that ahs replaced a well formed, terminated Selenite crystal. Ex. Chuck Trantham collection.


LL156 - Azurite, Malachite after Azurite $ 3500 (=~ CAN$ 4803)
Tsumeb, Namibia
cabinet - 11 x 6.5 x 6.5 cm


(click on an image to enlarge)

Azurite, Malachite after Azurite from Tsumeb, Namibia [db_pics/pics/LL156a.jpg] Azurite, Malachite after Azurite from Tsumeb, Namibia [db_pics/pics/LL156c.jpg] Azurite, Malachite after Azurite from Tsumeb, Namibia [db_pics/pics/LL156d.jpg] Azurite, Malachite after Azurite from Tsumeb, Namibia [db_pics/pics/LL156g.jpg] Azurite, Malachite after Azurite from Tsumeb, Namibia [db_pics/pics/LL156h.jpg] Azurite, Malachite after Azurite from Tsumeb, Namibia [db_pics/pics/LL156j.jpg]

Cluster of prismatic Azurite and Malachite after Azurite crystals with Arsentsumebite and Cerussite. I just the love the highly colorful specimens from this mine and this is a prime example of such a specimen. A very colorful mixture of blue, deep green Malachite, lighter green Arsentsumebite, and small crystals of Cerussite scattered about. Comes with an old Phil Scalisi label.


LL172 - Malachite after Azurite $ 350 (=~ CAN$ 480) SOLD
Ajo, Pima Co., Arizona, USA
miniature - 5 x 4.5 x 2.5 cm


(click on an image to enlarge)

Malachite after Azurite from Ajo, Pima Co., Arizona, USA [db_pics/pics/LL172a.jpg] Malachite after Azurite from Ajo, Pima Co., Arizona, USA [db_pics/pics/LL172b.jpg] Malachite after Azurite from Ajo, Pima Co., Arizona, USA [db_pics/pics/LL172c.jpg]

Wreath-like formation of Malachite pseudomorphs after Azurite. Large, blocky undamaged crystals. A floater covered by velvety Malachite all around.


M463 - Bixbyite on Hematite after Garnet $ 140 (=~ CAN$ 192)
Maynard Claim, Thomas Range, Juab Co., Utah, USA
thumbnail - 2.1 x 1.2 x 0.8 cm


(click on an image to enlarge)

Bixbyite on Hematite after Garnet from Maynard Claim, Thomas Range, Juab Co., Utah, USA [db_pics/pics/M463a.jpg] Bixbyite on Hematite after Garnet from Maynard Claim, Thomas Range, Juab Co., Utah, USA [db_pics/pics/M463b.jpg] Bixbyite on Hematite after Garnet from Maynard Claim, Thomas Range, Juab Co., Utah, USA [db_pics/pics/M463c.jpg]

Interconnected cluster of Hematite pseudomorphs after garnet, all sprinkled with lustrous black cubes of Bixbyite. Undamaged quality thumbnail.


LL452 - Azurite with Chrysocolla after Libethenite $ 280 (=~ CAN$ 384) SOLD
Burra Burra Copper Mine, Mt Lofty Ranges, South Australia, Australia
miniature - 4.5 x 3 x 2 cm


(click on an image to enlarge)

Azurite with Chrysocolla after Libethenite from Burra Burra Copper Mine, Mt Lofty Ranges, South Australia, Australia [db_pics/pics/LL452a.jpg] Azurite with Chrysocolla after Libethenite from Burra Burra Copper Mine, Mt Lofty Ranges, South Australia, Australia [db_pics/pics/LL452b.jpg] Azurite with Chrysocolla after Libethenite from Burra Burra Copper Mine, Mt Lofty Ranges, South Australia, Australia [db_pics/pics/LL452c.jpg] Azurite with Chrysocolla after Libethenite from Burra Burra Copper Mine, Mt Lofty Ranges, South Australia, Australia [db_pics/pics/LL452d.jpg]

Platy, electric blue crystals of Azurite with pseudomorphs of Chysocolla after Libethenite. Colorful and unusual Azurite specimen.


LL937 - Azurite, Malachite after Azurite $ 2500 (=~ CAN$ 3431) SOLD
Chessy, Rhone-Alpes, France
small cabinet - 8.5 x 6 x 5 cm


(click on an image to enlarge)

Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937a.jpg] Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937b.jpg] Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937c.jpg] Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937d.jpg] Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937g.jpg] Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937h.jpg] Azurite, Malachite after Azurite from Chessy, Rhone-Alpes, France [db_pics/pics/LL937i.jpg]

Deep blue Azurite and green Malachite after Azurite crystals from Chessy. This is a good sized specimen for the locality with great crystals all over, including a bridge of crystals. Comes with old Harvard Mineral Museum labels that dates the specimen back to at least 1976, but specimens have been found here since the 1800s and this could be significantly old than that. An excellent Chessy Azurite.


ST272 - Kolwezite/Malachite Pseudomorphs $ 250 (=~ CAN$ 343) SOLD
Kolwezi Mining District, Lualaba, DR Congo
small cabinet - 8.5 x 4.5 x 2.5 cm


(click on an image to enlarge)

Kolwezite/Malachite Pseudomorphs from Kolwezi Mining District, Lualaba, DR Congo [db_pics/pics/ST272a.jpg] Kolwezite/Malachite Pseudomorphs from Kolwezi Mining District, Lualaba, DR Congo [db_pics/pics/ST272b.jpg] Kolwezite/Malachite Pseudomorphs from Kolwezi Mining District, Lualaba, DR Congo [db_pics/pics/ST272c.jpg] Kolwezite/Malachite Pseudomorphs from Kolwezi Mining District, Lualaba, DR Congo [db_pics/pics/ST272g.jpg]

Dark green specimen of Kolwezite and/or Malachite that has pseudomorphed after Barite (?). Nothing but interconnected bladed crystals without matrix. Kolwezite is a Copper Cobalt Carbonate Hydroxide and this is the type locality for the species. private_notes


ST809 - Tennantite after Azurite $ 380 (=~ CAN$ 521)
Tsumeb, Namibia
small cabinet - 6 x 4 x 2 cm


(click on an image to enlarge)

Tennantite after Azurite from Tsumeb, Namibia [db_pics/pics/ST809a.jpg] Tennantite after Azurite from Tsumeb, Namibia [db_pics/pics/ST809b.jpg] Tennantite after Azurite from Tsumeb, Namibia [db_pics/pics/ST809c.jpg] Tennantite after Azurite from Tsumeb, Namibia [db_pics/pics/ST809d.jpg] Tennantite after Azurite from Tsumeb, Namibia [db_pics/pics/ST809f.jpg]

Crystal cluster of Tennanite after Azurite from Tsumeb. Elongated, primatic crystals of former Azurite that have been pseudomorphed to Tennantite. An undamaged floater cluster with individual crystals to 4.5cm in length.

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