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

B

4575 Iridescent Baculites
Minerals Specimen: Iridescent Baculites from Pierre Shale, Cretacous Period, South Dakota

Pierre Shale, Cretacous Period, South Dakota
Ex. Vivian Randall
5.8 x 3.4 x 1.3 cm
$25

3556 Barite, Quartz
Minerals Specimen: Barite, Quartz from Washington Co., Missouri

Washington Co., Missouri
8.6 x 9.2 x 7.6 cm
$25

C

5118 Copper with Casts
Minerals Specimen: Copper with Casts from Quincy Mine, Houghton Co., Michigan

Quincy Mine, Houghton Co., Michigan
24.2 x 13.7 x 1.8 cm
SOLD

5042 Chalcosiderite
Minerals Specimen: Chalcosiderite from Wheal Phoenix, Phoenix United Mine, Minions, Linkinhorne, Liskeard Dist., Cornwall, England

Wheal Phoenix, Phoenix United Mine, Minions, Linkinhorne, Liskeard Dist., Cornwall, England
CuFe3+6(PO4)4(OH)8·4H2O
9.3 x 5.3 x 5.4 cm
$125

4994 Calcite with Unidentified Pink Alteration, Chalcopyrite
Minerals Specimen: Calcite with Unidentified Pink Alteration, Chalcopyrite from Sweetwater Mine, Viburnum Trend Dist., Reynolds Co., Missouri

Sweetwater Mine, Viburnum Trend Dist., Reynolds Co., Missouri
4.2 x 1.9 x 1.5 cm
$40

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

4464 Cephalopod with Dolomite Crystals
Minerals Specimen: Cephalopod with Dolomite Crystals from Traverse City Group Limestone, Devonian, Alpena Co., Michigan

Traverse City Group Limestone, Devonian, Alpena Co., Michigan
Ex. Robert Gannon
9.3 x 3.9 x 2.7 and 7.7 x 4.2 x 2.8 and 5.7 x 3.2 x 3 cm
$50

4362 Coronadite Pseudomorph after Wulfenite (Black Wulfenite)
Minerals Specimen: Coronadite Pseudomorph after Wulfenite (Black Wulfenite) from Glove Mine,  Devil's Cash Box ridge, Amado, Cottonwood Canyon, Santa Cruz Co., Arizona

Glove Mine, Devil's Cash Box ridge, Amado, Cottonwood Canyon, Santa Cruz Co., Arizona
Ex. Steve Pullman, Ex. Dave Shannon
3.6 x 3.2 x 1.8 cm
$35

4057 Quartz on Twinned Calcite Crystals on Chalcedony Pseudomorph after Aragonite
Minerals Specimen: Quartz  on Twinned Calcite Crystals on Chalcedony Pseudomorph after Aragonite from Cadman Quarry, Monroe, Snowmish Co., Washington

Cadman Quarry, Monroe, Snowmish Co., Washington
Ex. George Katzmarek
5.9 x 5 x 4.7 cm
$45

3635 Chamosite Pseudomorph after Almandine
Minerals Specimen: Chamosite Pseudomorph after Almandine from Spurr Mountain Mine, Imperial Heights, Baraga Co., Michigan

Spurr Mountain Mine, Imperial Heights, Baraga Co., Michigan
6.3 x 6.3 x 6.4 cm
$35

3371 Chamosite Pseudomorph after Almandine
Minerals Specimen: Chamosite Pseudomorph after Almandine from Spurr Mountain Mine, Imperial Heights, Baraga Co., Michigan

Spurr Mountain Mine, Imperial Heights, Baraga Co., Michigan
5.2 x 4.7 x 4.8 cm
$35

3348 Hexagonal Calcite on Dolomite and Chalcopyrite Casts after Galena
Minerals Specimen: Hexagonal Calcite on Dolomite and Chalcopyrite Casts after Galena from Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri, USA

Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri, USA
11.7 x 5.4 x 3.6 cm
Largest XL is 2.6 x 1.2 x 0.9 cm
$50

3072 Chamosite Pseudomorph after Almandine with Magnetite Crystals
Minerals Specimen: Chamosite Pseudomorph after Almandine with Magnetite Crystals from Spurr Mine, Imperial Heights, Baraga Co., Michigan, USA

Spurr Mine, Imperial Heights, Baraga Co., Michigan, USA
4.2 x 3.8 x 3.3 cm
$45

2460 Copper Crystals with Analcime Casts
Minerals Specimen: Copper Crystals with Analcime Casts from Gratiot Mine (Seneca # 2 Mine), Mohawk, Keweenaw Co., Michigan

Gratiot Mine (Seneca # 2 Mine), Mohawk, Keweenaw Co., Michigan
Ex. A. E. Seaman Mineral Museum
7.5 x 4.2 x 4.5 cm
SOLD

2424 Copper Pseudomorph after Laumontite coated with Chlorite Included Quartz
Minerals Specimen: Copper Pseudomorph after Laumontite coated with Chlorite Included Quartz from Quincy Mine, Quincy Hill, Houghton County, Michigan, USA

Quincy Mine, Quincy Hill, Houghton County, Michigan, USA
Ex. Seaman Mineral Musueum
7.9 x 4.9 x 4.2 cm
$250

2243 Crinoid Stems
Minerals Specimen: Crinoid Stems from Bloomington,Monroe Co., Inidiana, USA

Bloomington,Monroe Co., Inidiana, USA
Priror to 1975
9.4 x 3.5 x 4.2 cm
$35

282 Copper Skull
Minerals Specimen: Copper Skull from Lake Superior Copper District, Michigan, USA

Lake Superior Copper District, Michigan, USA
10.2 x 6.3 x 4.6 cm
$175

D

3017 Dolomite Pseudomorph after Calcite with Micro Pyrite Crystals
Minerals Specimen: Dolomite Pseudomorph after Calcite with Micro Pyrite Crystals from Cavnic Mine, Cavnic, Maramures Co., Romania

Cavnic Mine, Cavnic, Maramures Co., Romania
12.2 x 9.6 x 4.4 cm
$75

H

5035 Hardystonite, Clinohedrite, Willemite, Calcite, Franklinite
Minerals Specimen: Hardystonite, Clinohedrite, Willemite, Calcite, Franklinite from Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey

Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey
Type Location
UV Fluorescent
Hardystonite: Ca2ZnSi2O7 , Clinoherdite: CaZnSiO4·H2O
7.1 x 6.7 x 3.4 cm
$75

M

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

4392 Mimetite pseudomorph after Vanadinite
Minerals Specimen: Mimetite pseudomorph after Vanadinite from Elko County, Nevada

Elko County, Nevada
Collected by Steve Pullman
6 x 6.4 x 2.6 cm
$30

2887 Malachite Pseudomorph after Azurite
Minerals Specimen: Malachite Pseudomorph after Azurite from Tsumeb, Namibia

Tsumeb, Namibia
3.8 x 2.9 x 2.6 cm
$250

2508 Malachite Pseudomorph after Azurite
Minerals Specimen: Malachite Pseudomorph after Azurite from Mina Milipillas, Milipillas, Sonora, Mexico

Mina Milipillas, Milipillas, Sonora, Mexico
6.3 x 5 x 1.3 cm
$75

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

5142 Green Petrifed Wood
Minerals Specimen: Green Petrifed Wood from Hampton Butte, Deschutes Co., Oregon

Hampton Butte, Deschutes Co., Oregon
Collected by Tony West
10.7 x 6.3 x 4.4 cm
$45

5087 Plumbogummite Pseduomorph after Pyromorphite
Minerals Specimen: Plumbogummite Pseduomorph after Pyromorphite from Yangshuo Mine, Yangshuo Co., Guilin Pref., Guangxi Zhuang Autonomous Region, China

Yangshuo Mine, Yangshuo Co., Guilin Pref., Guangxi Zhuang Autonomous Region, China
UV Fluorescent
PbAl3(PO4)(PO3OH)(OH)6
6.5 x 4.3 x 3.4 cm
$200

5044 Pyromorphite Pseudomorph after Cerussute
Minerals Specimen: Pyromorphite Pseudomorph after Cerussute from Higher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck Fells, Cumbria, England

Higher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck Fells, Cumbria, England
5.6 x 4.3 x 3.8 cm
$150

5029 Plumbogummite Pseduomorph after Pyromorphite
Minerals Specimen: Plumbogummite Pseduomorph after Pyromorphite from Yangshuo Mine, Yangshuo Co., Guilin Pref., Guangxi Zhuang Autonomous Region, China

Yangshuo Mine, Yangshuo Co., Guilin Pref., Guangxi Zhuang Autonomous Region, China
UV Fluorescent
PbAl3(PO4)(PO3OH)(OH)6
7.1 x 6.4 x 5.8 cm
$750

5028 Plumbogummite Pseduomorph after Pyromorphite
Minerals Specimen: Plumbogummite Pseduomorph after Pyromorphite from Yangshuo Mine, Yangshuo Co., Guilin Pref., Guangxi Zhuang Autonomous Region, China

Yangshuo Mine, Yangshuo Co., Guilin Pref., Guangxi Zhuang Autonomous Region, China
PbAl3(PO4)(PO3OH)(OH)6
5.6 x 4.3 x 4.2 cm
$100

4760 Pyromorphite on Quartz with Casts after Barite
Minerals Specimen: Pyromorphite on Quartz with Casts after Barite from Williams Corners, Wheatley Mines, Phoenixville Mining dist., Schuylkill Twp., Chester Co., Pennsylvania

Williams Corners, Wheatley Mines, Phoenixville Mining dist., Schuylkill Twp., Chester Co., Pennsylvania
9.8 x 6.2 x 5.2 cm
$75

4578 Polsihed Petrified Wood Limb
Minerals Specimen: Polsihed Petrified Wood Limb from Western United States

Western United States
1960s
7.3 x 6 x 5.7 cm
$45

4228 Pyromorphite on Quartz with Casts after Barite
Minerals Specimen: Pyromorphite on Quartz with Casts after Barite from Mexico Mine, Roughton Gill, Caldbeck Fells, Cumbria, England

Mexico Mine, Roughton Gill, Caldbeck Fells, Cumbria, England
Ex. H. R. McBroom, from trade with Sam Weller, 1987
7.8 x 6.2 x 3.1 cm
$85

4104 Polished Petrified Wood (Chalcedony / Quartz)
Minerals Specimen: Polished Petrified Wood (Chalcedony / Quartz) from Blue Forest, Eden Valley, Sweetwater Co., Wyoming

Blue Forest, Eden Valley, Sweetwater Co., Wyoming
Pre 1975
10.4 x 7.3 x 1.1 cm
$25

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
$50

Q

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

4919 Quartz Pseudomorph after Goethite Stalactit Growths with Attached Flint
Minerals Specimen: Quartz Pseudomorph after Goethite Stalactit Growths with Attached Flint from John Nethers property, Flint Ridge, Hopewell Twp., Muskingum Co., Ohio

John Nethers property, Flint Ridge, Hopewell Twp., Muskingum Co., Ohio
Collected by J. Medici
6.8 x 6.7 x 6.3 cm
The individual stalactites measure 5 to 7 mm in diameter.
$85

4857 Quartz Pseudomorph after Anhydrite
Minerals Specimen: Quartz Pseudomorph after Anhydrite from OS pocket, Ouray, Ouray District, San Juan Mts, Ouray Co., Colorado

OS pocket, Ouray, Ouray District, San Juan Mts, Ouray Co., Colorado
13.7 x 5.3 x 1.3 cm
$200

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

4290 Rutile Twins (Saegenite) and Muscovite on Limonite Pseudomorph after Siderite
Minerals Specimen: Rutile Twins (Saegenite) and Muscovite on Limonite Pseudomorph after Siderite from Boiling Springs, Cleveland Co., North Carolina

Boiling Springs, Cleveland Co., North Carolina
Ex. H. R. McBroom, purchased 1987
3.8 x 2.4 x 1.7 cm
SOLD

S

5146 Stibiconite Pseudomorph after Stibnite
Minerals Specimen: Stibiconite Pseudomorph after Stibnite from Mina San Jose de Wadley, Catorce, San Luis Potosi, Mexico

Mina San Jose de Wadley, Catorce, San Luis Potosi, Mexico
4.1 x 3 x 1.5 cm
$45
/ Reserved

4827 Turkey Fat Smithsonite, Sphalerite, Dolomite
Minerals Specimen: Turkey Fat Smithsonite, Sphalerite, Dolomite from Rush, Rush Creek Dist., Marion Co., Arkansas

Rush, Rush Creek Dist., Marion Co., Arkansas
5.4 x 4.3 x 2.7 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

4356 Sphalerite variety Ruby Jack, Calcite casts
Minerals Specimen: Sphalerite variety Ruby Jack, Calcite casts from Cleator Moor Iron Mines, Cleator Moor, West Cumberland Iron Field, Cumbria, England

Cleator Moor Iron Mines, Cleator Moor, West Cumberland Iron Field, Cumbria, England
6.4 x 5.2 x 4.1 cm
$100

4191 Silver/Copper Halfbreed with Casts
Minerals Specimen: Silver/Copper Halfbreed with Casts from Minesota Mine, Ontonagon Co., Michigan

Minesota Mine, Ontonagon Co., Michigan
Ex. George Katzmarek
4.3 x 3.4 x 1.5 cm
$75

T

5000 Tennanite pseudomorph after Enargite with Malachite
Minerals Specimen: Tennanite pseudomorph after Enargite with Malachite from Tsumeb, Namibia

Tsumeb, Namibia
4.8 x 3.5 x 1.9 cm
$120

4673 Carved Tigereye
Minerals Specimen: Carved Tigereye from Purchased in Japan in 1981

Purchased in Japan in 1981
Ex. Vivian Randall
5.5 x 3.9 x 1.9 cm
$45

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
$175

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

4186 Vanadinite partial Pseudomorph to Descloizite
Minerals Specimen: Vanadinite partial Pseudomorph to Descloizite from Abenab Mine, Grootfontein District, Otjozondjupa Region, Namibia

Abenab Mine, Grootfontein District, Otjozondjupa Region, Namibia
Ex. Charles M. Noll Collection
5.3 x 3.2 x 2.5 cm
$250

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Other Galleries

 
Latest Updates

 

Previous Updates 

 

By Special Interest

 

Thumbnails
Rare Species
Pseudomorphs
Fluorescents

 

Minerals with Inclusions

 

Polished & Worked

 

Priced Under 25.00

 

Study, Hobby and Bulk Samples

 

By Mineral Species or Group

 

Beryl
Calcite
Copper
Fluorite
Garnet
Gold & Silver
Quartz
Tourmaline
Topaz
Zeolites

 

By Geographic Region

 

Africa
Asia
Brazil
Canada
Latin America
China
Europe
Mexico
Russia
United States
*Michigan*
*Arizona*
*California*
*Nevada*
*New York*
*New Jersey*
*New England*

 

Systematic Galleries

 

Elements 
Oxides
Carbonates
Halides
Phosphates
Arsenates
Sulfides
Sulfates
Nesosilicates
Cyclosilicates
Sorosilicates
Phyllosilicates
Tectosilicates
Inosilicates
Borates & Hydrocarbons

 

By Price

 

Under 25
Under 25 with Webpage
25 to 49
50 to 99
100 to 199
200 to 299
300 to 499
500 & Greater