To view 3d wall of images click here
|
|
Grace Mine, Morgantown, Berks Co., Pennsylvania, USA
Large single crystal of octahedral magnetite with minor matrix. The crystal surfaces is composed of many parallel crystal faces resulting in a stepped surface. No damage. Overall size of mineral specimen: 25x24x22 mm. Size of individual crystals: 22 mm. |
| © 2002 John H. Betts | Photo ID: 4524 View Count: 472 |
|
|
Grace Mine, Morgantown, Berks Co., Pennsylvania, USA
Complex modified dodecahedral crystals of Magnetite from Grace Mine, Morgantown, Berks Co., Pennsylvania. A well crystalized miniature, but lacking the complex stepped surface development, often accented by white amphibole, for which the mine is best known. Specimen size: 5.5 x 4cm. From the PA Annex of my personal collection, acquired in 2006. |
| © M.Heintzelman | Photo ID: 98475 View Count: 414 |
|
|
Grace Mine, Morgantown, Berks Co., Pennsylvania, USA
Large piece of magnetite ore that escaped processing. Massive magnetite with little matrix. Specimen is 14 inches horizontally. The specimen weighs 11.6 kg. Collected by Mark J. Sigouin in 2007 from mine spoils. |
| © Mark J. Sigouin | Photo ID: 144128 View Count: 139 |
|
|
Grace Mine, Morgantown, Berks Co., Pennsylvania, USA
Alternating bands of Magnetite in Tremolite-Actinolite Matrix. Collected from the spoils of this underground ore deposit. Much of the magnetite in the spoils is massive and layered with matrix. Specimen is 3 inches in the horizontal. Collected by Mark J. Sigouin in 2006. |
| © Mark J. Sigouin | Photo ID: 144110 View Count: 133 |
