Red Beryl from Wah Wah Mountains, Utah

 

M & W Minerals

Walter R. Kellogg

 

517 294 6709

mwminerals@comcast.net

                           

 

 

 Pseudomorphs and Casts Gallery


On this gallery, are gathered all the specimens on this website which are considered pseudomorphs. A pseudomorph is a mineral or mineral compound  which is in an atypical form, which has resulted from a substitution process in which the appearance and dimensions of one mineral have been retained, but the original mineral is replaced by another. The name literally means "false form". There are essentially 3 kinds of pseudmorphs which are the following:

Substitution Pseudomorphs: In these specimens, one mineral has been completely chemically substituted by another mineral. The shape of the original mineral is retained, but color, hardness, and density are usually different (and often luster).

Alteration Pseudomorphs: In these specimens, only a partial substitution has occurred. This leads to a specimen with a layer of the new mineral with an interior of the original mineral with the shape of the original mineral.

Perimorphs: In these specimens, one mineral has been coated by another and the original has dissolved. This usually leads to a specimen with a mix of surfaces both of the new mineral and the surfaces of the dissolved mineral. A gray area is where this 

dissolution is not natural. A case in point, Michigan Copper specimens are often found as casts after Calcite. In some cases, the dissolution has occurred due to acidic natural solutions but in other cases the Calcite has been purposely etched out with acid. Sometimes it is difficult to differentiate between the two.

Casts: In these specimens, a mineral has formed but it's shape has been determined by the environment in which it formed. Two examples are geodes and Michigan Copper Skulls and Amygdules.

minerals in alphabetical order by first letter only
(this is the primary mineral of the specimen - the pseudomorph may be a secondary mineral)

click on the title link or photo to proceed to a specimen's page

A

6883 Fluorapatite with Fluorite and Casts after Fluorite
Minerals Specimen: Fluorapatite with Fluorite and Casts after Fluorite from Cardiff Twp., Haliburton Co., Ontario, Canada

Cardiff Twp., Haliburton Co., Ontario, Canada
Ex. Robert Gannon
9.6 x 8 x 7.6 cm
$25

6575 Azurite Psuedomorphing to Malachite with Aragonite
Minerals Specimen: Azurite Psuedomorphing to Malachite with Aragonite from Tsumeb, Namibia

Tsumeb, Namibia
Ex. Norm Woods
11.8 x 9.8 x 8.1 cm
$150

B

4604 Calcite pseudomorph after Glauberite
Minerals Specimen: Calcite pseudomorph after Glauberite from Camp Verde, Camp Verde District, Yavapai Co., Arizona

Camp Verde, Camp Verde District, Yavapai Co., Arizona
9 x 6.7 x 7.1 cm
$45

C

6694 Calcite with Psuedomorphic Casts
Minerals Specimen: Calcite with Psuedomorphic Casts from Hardin Co., Illinois

Hardin Co., Illinois
Ex. A. Neely, 1960s
11.4 x 7.8 x 5 cm
$45

6374 Chrysocolla Pseudomoprh after Malachite, Micro Crystals of Dioptase
Minerals Specimen: Chrysocolla Pseudomoprh after Malachite, Micro Crystals of Dioptase from Bonanza Mine (Harquahala Mine), Martin Peak, Salome, Little Harquahala Dist., Little Harquahala Mts, La Paz Co., Arizona

Bonanza Mine (Harquahala Mine), Martin Peak, Salome, Little Harquahala Dist., Little Harquahala Mts, La Paz Co., Arizona
Ex. Steve Pullman, Ex. Fraziers
9.9 x 7 x 5.6 cm
labeled as Bisbeeite
$45

6200 Calcite Crystals with Small Casts
Minerals Specimen: Calcite Crystals with Small Casts from Santa Eulalia District, Mun. de Aquiles Serdan, Chihuahua, Mexico

Santa Eulalia District, Mun. de Aquiles Serdan, Chihuahua, Mexico
1970s
14.1 x 12.2 x 7.1 cm
$50

5916 Cerussite Pseudomorh after Galena, Linarite, Brochantite, Quartz
Minerals Specimen: Cerussite Pseudomorh after Galena, Linarite, Brochantite, Quartz from Blanchard Mine, Bingham, Hansonburg District, Socorro Co., New Mexico

Blanchard Mine, Bingham, Hansonburg District, Socorro Co., New Mexico
5.7 x 4.4 x 3.1 cm
$75

5878 Chalcocite Crystals on Massive Chaclcocite with Cast
Minerals Specimen: Chalcocite Crystals on Massive Chaclcocite with Cast from Wheal Pendarves, Killivose, Camborne, Cornwall, England

Wheal Pendarves, Killivose, Camborne, Cornwall, England
4.4 x 3.7 x 3.3 cm
$100

D

6108 Dolomite Pseudomorph/Epimorph after Calcite
Minerals Specimen: Dolomite Pseudomorph/Epimorph after Calcite from Guanajuato, Guanajuato, Mexico

Guanajuato, Guanajuato, Mexico
1960s
9.5 x 5.8 x 3.5 cm
The Dolomite is approximately 2 mm thick.
$70

6021 Datolite Crystals and Smoky Quartz with Pseudomorphic Casts after Calcite
Minerals Specimen: Datolite Crystals and Smoky Quartz with Pseudomorphic Casts after Calcite from Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia

Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia
12.2 x 7.5 x 4.7 cm
$200

5853 Datolite and Quartz with Casts after Calcite
Minerals Specimen: Datolite and Quartz with Casts after Calcite from Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia

Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia
10.8 x 8.5 x 4.3 cm
$600

F

6959 Fluorapophyllite on Prehnite Pseudomorphs after Laumontite
Minerals Specimen: Fluorapophyllite on Prehnite Pseudomorphs after Laumontite from Poona, India

Poona, India
Ex. E. Morales from Ro-Me-India, Munich Show, Oct. 1980
5.1 x 4.1 x 3.2 cm
$75

6545 Fluorite on Quartz with Pseudomorphic Casts after Fluorite
Minerals Specimen: Fluorite on Quartz with Pseudomorphic Casts after Fluorite from Frazer's Hush Mine, Rookhope, Stanhope, County Durham, England

Frazer's Hush Mine, Rookhope, Stanhope, County Durham, England
UV Fluorescent
12 x 11.2 x 5.3 cm
$250

6435 Multicolored Fluorite with Included Chalcopyrite, Casts after Barite
Minerals Specimen: Multicolored Fluorite with Included Chalcopyrite, Casts after Barite from Hardin Co., Illinois

Hardin Co., Illinois
Ex. A. Neely, Wrapped in Hardin County Independent newspapers from 1963
19.3 x 13.5 x 6 cm
$200

5467 Fluorite on and within Quartz Pseudomorphs after Calcite Coated with Montromite
Minerals Specimen: Fluorite on and within Quartz Pseudomorphs after Calcite Coated with Montromite from Prospectors Delight Mine (Black Knife Mine), Cuchillo Negro Dist., Sierra Cuchillo, Sierra Co., New Mexico

Prospectors Delight Mine (Black Knife Mine), Cuchillo Negro Dist., Sierra Cuchillo, Sierra Co., New Mexico
Ex. Wright's Rock Shop
10.8 x 7.2 x 6.5 cm
$100

G

6475 Goethite Pseudomorph after Octahedral Pyrite
Minerals Specimen: Goethite Pseudomorph after Octahedral Pyrite from North Salinas Valley, Inyo Co., California

North Salinas Valley, Inyo Co., California
Ex. E. Morales from J. Minette, 1983
6.9 x 4.4 x 3.3 cm
$75

H

6659 Hematite Pseudomorph after Magnetite (Martite)
Minerals Specimen: Hematite Pseudomorph after Magnetite (Martite) from Payun Martu, Altiplano de Payun Matru, Malargue Dept., Mendoza Prov., Argentina

Payun Martu, Altiplano de Payun Matru, Malargue Dept., Mendoza Prov., Argentina
Ex. Norm Woods
6.5 x 6 x 4 cm
$60

L

5330 Limonite Pseudomorph after Marcasite and Spahlerite with Dolomite and Calcite
Minerals Specimen: Limonite Pseudomorph after Marcasite and Spahlerite with Dolomite and Calcite from Fairdale Quarry (I-39 Quarry), Rochelle, Ogle Co., Illinois

Fairdale Quarry (I-39 Quarry), Rochelle, Ogle Co., Illinois
5.1 x 5.2 x 4.9 cm
Largest crystal measures 1.2 cm across.
$45

M

6855 Malachite Pseudomorph after Azurite
Minerals Specimen: Malachite Pseudomorph after Azurite from Sacramento pit, Sacramento Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona

Sacramento pit, Sacramento Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona
Early 1900s
3.4 x 1.8 x 1 cm
$150

6765 Chatoyant Malachite Psuedomorph after Azurite
Minerals Specimen: Chatoyant Malachite Psuedomorph after Azurite from Tsumeb, Namibia

Tsumeb, Namibia
4.2 x 3.5 x 2.4 cm
$175

6521 Marcasite Cast after Calcite, Galena coated with Lead and Iron Oxides
Minerals Specimen: Marcasite Cast after Calcite, Galena coated with Lead and Iron Oxides from Joplin Field, Tri-State District, Jasper Co., Missouri

Joplin Field, Tri-State District, Jasper Co., Missouri
9.3 x 9 x 5.9 cm
$50

5920 Malachite and Malachite Pseudomorh after Azurite
Minerals Specimen: Malachite and Malachite Pseudomorh after Azurite from Bisbee, Warren District, Mule Mts, Cochise Co., Arizona

Bisbee, Warren District, Mule Mts, Cochise Co., Arizona
4.8 x 3.8 x 3.9 cm
$35

5027 Malachite on Quartz with Casts after Calcite, Minor Chalcopyrite
Minerals Specimen: Malachite on Quartz with Casts after Calcite, Minor Chalcopyrite from Mina El Cobre, Zacatecas, Mexico

Mina El Cobre, Zacatecas, Mexico
Ex. Robert Gannon
7.8 x 6.3 x 4.2 cm
$45

4629 Malachite Pseudomorph after Azurite
Minerals Specimen: Malachite Pseudomorph after Azurite from Tsumeb, Namibia

Tsumeb, Namibia
5.2 x 2.8 x 1.6 cm
$150

2062 Mimetite on Goethite pseudomorphs after Calcite
Minerals Specimen: Mimetite on Goethite pseudomorphs after Calcite from Megala Pefka Mine No. 28, Lavrion (Laurion; Laurium) District, Attiki (Attica) Prefecture, Greece

Megala Pefka Mine No. 28, Lavrion (Laurion; Laurium) District, Attiki (Attica) Prefecture, Greece
Ex. Steve Pullman
6.2 x 6 x 1.5 cm
$50

P

6809 Pyrite Psuedomorph after Marcasite, Quartz, Dolomite, Calcite
Minerals Specimen: Pyrite Psuedomorph after Marcasite, Quartz, Dolomite, Calcite from Pilot Mine, Nanisivik Mine, Nanisivik, Baffin Island, Nunavut Territory, Canada

Pilot Mine, Nanisivik Mine, Nanisivik, Baffin Island, Nunavut Territory, Canada
20.6 x 15 x 7.2 cm
$250

6724 Pyrolusite Pseudomorph after Manganite
Minerals Specimen: Pyrolusite Pseudomorph after Manganite from Gremmelsbach, Triberg im Schwarzwald (Black Forest), Baden-Wurttemberg, Germany

Gremmelsbach, Triberg im Schwarzwald (Black Forest), Baden-Wurttemberg, Germany
Ex. George Balogh
4.5 x 2.3 x 2 cm
$75

6681 Prehnite Pseudomorphs after Anhydrite, Stilbite, Calcite
Minerals Specimen: Prehnite Pseudomorphs after Anhydrite, Stilbite, Calcite from Paterson, Passaic Co., New Jersey

Paterson, Passaic Co., New Jersey
Ex. E. Morales from ALW Collections, 1996
4.8 x 4 x 3.6 cm
$30

1663 Petrified Wood
Minerals Specimen: Petrified Wood from Montana

Montana
10.5 x 8.4 x 3.8 cm
$15

338 Pyrite pseudomorph after Pyrrhotite
Minerals Specimen: Pyrite pseudomorph after Pyrrhotite from Zacatecas, Mexico

Zacatecas, Mexico
8 x 5.7 x 4 cm
SOLD

Q

6923 Quartz Pseudomorph after Calcite
Minerals Specimen: Quartz Pseudomorph after Calcite from Guanajuato, Guanajuato, Mexico

Guanajuato, Guanajuato, Mexico
Ex. E. Morales from the Mineral Cabinet, Seton Hall show, Aug. 1982
7 x 5.8 x 4.1 cm
$150

6886 Quartz variety: Chalcedony pseudomorph after Aragonite
Minerals Specimen: Quartz variety: Chalcedony pseudomorph after Aragonite from Valle de las Plumas (Valle de los Martires), Las Plumas, Martires Dept., Chubut Prov., Argentina

Valle de las Plumas (Valle de los Martires), Las Plumas, Martires Dept., Chubut Prov., Argentina
Ex. Norm Woods
7.2 x 6.3 x 5.6 cm
$75

6353 Quartz Pseuodomorph after Anhydrite
Minerals Specimen: Quartz Pseuodomorph after Anhydrite from Danialo Mine, Sao Gabriel, Rio Grande do Sul, Brazil

Danialo Mine, Sao Gabriel, Rio Grande do Sul, Brazil
Ex. E. Morales, purchased from Aurora Minerals, New York Show, Nov. 1981
6.1 x 3.8 x 3.3 cm
$75

6105 Quartz Pseudomorph/Epimorph after Hemimorphite
Minerals Specimen: Quartz Pseudomorph/Epimorph after Hemimorphite from Mapimi, Durango, Mexico

Mapimi, Durango, Mexico
1970s
12.6 x 9.6 x 4.7 cm
$100

5977 Hematite Pseudomorph after Epidote with Quartz
Minerals Specimen: Hematite Pseudomorph after Epidote with Quartz from Bessemer Claim, Bessemer Ridge, Green Mountain, North Bend, King Co., Washington

Bessemer Claim, Bessemer Ridge, Green Mountain, North Bend, King Co., Washington
Ex. Steve Pullman, Ex. David Shannon
6.8 x 3.8 x 2 cm
$50

5915 Quartz Epimorph after Fluorite
Minerals Specimen: Quartz Epimorph after Fluorite from Silverton, San Juan Co., Colorado

Silverton, San Juan Co., Colorado
from Rock & Minerals Denver Auction, Ex. George Witters
11.1 x 6.8 x 4.2 cm
$100

5490 Smoky Quartz Pseudomorph
Minerals Specimen: Smoky Quartz Pseudomorph from Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia

Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia
7.8 x 4 x 2.8 cm
$150

5263 Smoky Quartz, Hematite, Copper Stained Chalcedony with Pseudomophs and Casts
Minerals Specimen: Smoky Quartz, Hematite, Copper Stained Chalcedony with Pseudomophs and Casts from Mexico (likely Concepcio del Oro, Zacatecas, Mexico)

Mexico (likely Concepcio del Oro, Zacatecas, Mexico)
Ex. Robert Gannon
6.5 x 5.8 x 6.4 cm
Uprght crystal measures 4.5 cm tall.
$75

5064 Quartz and Hematite Pseudomorph after Epidote
Minerals Specimen: Quartz and Hematite Pseudomorph after Epidote from Bessemer Claim, Bessemer Ridge, Green Mountain, North Bend, King Co., Washington

Bessemer Claim, Bessemer Ridge, Green Mountain, North Bend, King Co., Washington
Ex. Steve Pullman
7.7 x 3.8 x 2.2 cm
$50

3111 Quartz Pseudomorph after Poker Chip Calcite
Minerals Specimen: Quartz Pseudomorph after Poker Chip Calcite from Guanajuato, Mexico

Guanajuato, Mexico
14 x 12.6 x 7.3 cm
$75

R

6860 Rockbridgeite, Psuedomophs Casts after Unknown Crystals
Minerals Specimen: Rockbridgeite, Psuedomophs Casts after Unknown Crystals from Conselheiro Pena, Doce valley, Minas Gerais, Brazil

Conselheiro Pena, Doce valley, Minas Gerais, Brazil
Ex. Luiz Menezes
7 x 4.4 x 1.6 cm
The primary Albite crystal is 1.5 cm thick.
$35

S

6759 Smithsonite on Quartz Pseudomorphs
Minerals Specimen: Smithsonite on Quartz Pseudomorphs from Philadelphia Mine, Rush, Rush Creek District, Marion Co., Arkansas

Philadelphia Mine, Rush, Rush Creek District, Marion Co., Arkansas
6.5 x 6.4 x 3.2 cm
$100

6531 Smithsonite Pseudomorh after Calcite
Minerals Specimen: Smithsonite Pseudomorh after Calcite from Mina San Antonio, East Camp, Santa Eulalia Dist., Mun. de Aquiles Serdan, Chihuahua, Mexico

Mina San Antonio, East Camp, Santa Eulalia Dist., Mun. de Aquiles Serdan, Chihuahua, Mexico
7.6 x 6 x 4.2 cm
$75

4408 Smoky Quartz with Included Hematite, Goethite Pseudomorphs after Siderite, Microcline
Minerals Specimen: Smoky Quartz with Included Hematite, Goethite Pseudomorphs after Siderite, Microcline from Teller Co., Colorado

Teller Co., Colorado
15.8 x 6.6 x 4.6 cm
$85

T

1149 Tourmaline with inner core replaced with Quartz
Minerals Specimen: Tourmaline with inner core replaced with Quartz from Urubu mine, Monte Belo, Itinga, Jequitinhonha valley, Minas Gerais, Brazil

Urubu mine, Monte Belo, Itinga, Jequitinhonha valley, Minas Gerais, Brazil
5 x 2.1 x 1.8 cm
SOLD

U

4349 Uralite, Epidote
Minerals Specimen: Uralite, Epidote from Calumet Mine, Turret District, Chaffee Co., Colorado, USA

Calumet Mine, Turret District, Chaffee Co., Colorado, USA
7.8 x 6.5 x 4.5 cm
Epidote XL is 2.7 long and 1.1 cm in width
$40

3339 Uralite and Epidote with Calcite
Minerals Specimen: Uralite and Epidote with Calcite from Calumet Mine, Turret District, Chaffee Co., Colorado, USA

Calumet Mine, Turret District, Chaffee Co., Colorado, USA
11.5 x 7.5 x 5.5 cm
Largest XL 7 x 3 x 1 mm
$30

V

6410 K-Feldspar variety: Valencianite with Quartz Pseudomorph after Calcite
Minerals Specimen: K-Feldspar variety: Valencianite with Quartz Pseudomorph after Calcite from Mina Valencia, Guanajuato, Mexico

Mina Valencia, Guanajuato, Mexico
al2PO4(OH)3
Ex. Robert Gannon, 1960/70s
6.7 x 5.9 x 3.3 cm
$45

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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