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Karl Volkman's Photo Gallery

D54-XRFPerovskite CaTiO3 , Kimzeyite Ca3Zr2(SiO4)(AlO4)2

03955820014946389682084.jpg
Magnet Cove, Hot Spring County, Arkansas, USA

A 1mm perovskite with associated kimzeyite in matrix. Photographed by, and in the collection of, Don Volkman
Copyright: © Don Volkman 3/25/13      Photo ID: 524269     Uploaded by: Karl Volkman   Upload date: 2013-03-25   View Count: 296    Status: Public galleries    Type: Photo - 901×954 (0.9 Mpix)

72Y-YWCPyrite FeS2 , Baryte BaSO4

05182700014946389683619.jpg
Frostburg, Allegany County, Maryland, USA

A mass of tarnished and slightly iridescent pyrites with white baryte on matrix. Field of view 2mm Photographed by, and in the collection of Don Volkman.
Copyright: © Don Volkman 3/25/13      Photo ID: 524266     Uploaded by: Karl Volkman   Upload date: 2013-03-25   View Count: 348    Status: Public galleries    Type: Photo - 1280×1024 (1.3 Mpix)

VXN-24KGold (Var: Electrum) (Au,Ag)

06634200014946389683780.jpg
Butte Mining District, Silver Bow County, Montana, USA

A small sheet of "electrum" (visually identified) collected during the summer of 2002 at one of the outer Silver/manganese halo mines of the Butte District. The sheet is 2mm by 2mm.

Photographed by, and in the collection of, Don Volkman. BB
Copyright: © Don Volkman 3/25/13      Photo ID: 524261     Uploaded by: Karl Volkman   Upload date: 2013-03-25   View Count: 587    Status: Public galleries    Type: Photo - 1280×1024 (1.3 Mpix)

PVH-38GMagnetite Fe2+Fe3+2O4

08040050014946389685971.jpg
Nordmark mining district, Filipstad, Värmland County, Sweden

A group of magnetite crystals on matrix, the largest crystal is 3mm across the large face.

Photographed by, and in the collection of, Don Volkman
Copyright: © Don Volkman 3/25/13      Photo ID: 524259     Uploaded by: Karl Volkman   Upload date: 2013-03-25   View Count: 283    Status: Public galleries    Type: Photo - 993×862 (0.9 Mpix)

PLU-V1JSphalerite ZnS , Quartz SiO2

09267610014946389683287.jpg
Butte Mining District, Silver Bow County, Montana, USA

A complex sphalerite crystal mass approximately .75mm across collected by Don Volkman from a mine in the outer silver/manganese belt of the Butte District, Montana.

Photographed, collected, and in the collection of Don Volkman
Copyright: © Don Volkman 3/23/13      Photo ID: 523682     Uploaded by: Karl Volkman   Upload date: 2013-03-24   View Count: 305    Status: Public galleries    Type: Photo - 1229×1009 (1.2 Mpix)

6T3-39RGoethite α-Fe3+O(OH) , Quartz SiO2

00860560014946389692677.jpg
Estacion Ojo Laguna, Ahumada Municipality, Chihuahua, Mexico

A spray of goethite needles 1.5mm tall emerging from a quartz crystal cluster

Photographed by Karl Volkman. Cut and in the collection of Don Volkman.

Combined from 15 frames using Combine ZP
Copyright: © Don and Karl Volkman 19 July 12      Photo ID: 477468     Uploaded by: Karl Volkman   Upload date: 2012-07-20   View Count: 201    Status: Public galleries    Type: Photo - 968×996 (1.0 Mpix)

GF1-F0JGoethite α-Fe3+O(OH) , Quartz SiO2

02357480014946389696858.jpg
Estacion Ojo Laguna, Ahumada Municipality, Chihuahua, Mexico

A small mass of goethite sporting a pair of long needles reaching just over 2mm long.

Photographed by Karl Volkman. Cut and in the collection of Don Volkman.

Combined from 10 frames using Combine ZP
Copyright: © Don and Karl Volkman 19 July 12      Photo ID: 477467     Uploaded by: Karl Volkman   Upload date: 2012-07-20   View Count: 288    Status: Public galleries    Type: Photo - 1258×1020 (1.3 Mpix)

R2Y-RPAGoethite α-Fe3+O(OH) , Quartz SiO2

03968530014946389693103.jpg
Estacion Ojo Laguna, Ahumada Municipality, Chihuahua, Mexico

A 1mm tall mass of goethite needles partially enclosed in a group of quartz crystals.

Photographed by Karl Volkman. Cut and in the collection of Don Volkman.

Combined from 10 frames using Combine ZP
Copyright: © Don and Karl Volkman 19 July 12      Photo ID: 477466     Uploaded by: Karl Volkman   Upload date: 2012-07-20   View Count: 230    Status: Public galleries    Type: Photo - 1181×1009 (1.2 Mpix)

A9A-DPTGoethite α-Fe3+O(OH) , Quartz SiO2

05556040014946389695330.jpg
Estacion Ojo Laguna, Ahumada Municipality, Chihuahua, Mexico

root beer brown Crystals of Goethite on quartz. This is the largest grouping of the blades in this agate/geode. Field of View 2mm

Photographed by Karl Volkman. Cut and in the collection of Don Volkman

Combined from 6 Frames using Combine ZP.
Copyright: © Don and Karl Volkman 18 July 12      Photo ID: 477334     Uploaded by: Karl Volkman   Upload date: 2012-07-19   View Count: 357    Status: Public galleries    Type: Photo - 872×833 (0.7 Mpix)

4YC-7L6Goethite α-Fe3+O(OH) , Quartz SiO2

07588510014946389692057.jpg
Oco geode deposits, Três Pinheiros, Fontoura Xavier, Rio Grande do Sul, Brazil

A small mass, ~3mm tall, of possible goethite on quartz with masses of white and clear quartz grains

Photographed by, and in the collection of, Karl Volkman.

Stack of 15 frames combined using Combine ZP
Copyright: © Karl Volkman 16 July 12      Photo ID: 477032     Uploaded by: Karl Volkman   Upload date: 2012-07-17   View Count: 565    Status: Public galleries    Type: Photo - 1100×1014 (1.1 Mpix)
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