American Girl Mine, American Girl project, Obregon, Cargo Muchacho Mining District, Cargo Muchacho Mountains, Imperial County, California, USA
Atacamite collected Dec. 2019 with Phillip Feldman. I am grateful to David Lowe for performing XRF and XRD analysis and to Paul Favia for the photograph. This is the first report of atacamite in Imperial County.
Yellowish-brown crystals of duhamilite (Bismuthian- mottramite) on crysocolla. Specimen collected 1/27/13 by Robert E. Walstrom from boulders at top west end of open pit. Photo: Robert E. Walstrom. Camera: Dino-Lite AD-4013TL digital.
Yellowish-brown crystals of mottramine var: duhamilite (Bismuthian mottramite) on colorless quartz. Specimen collected 1/27/13 by Robert E. Walstrom from the top of the west wall of the open pit. Several boulders here produced the specimens. Photo Robert E. Walstrom. Camera: Dino-Lite AD-4013TL Digital.
Blue chalcanthite. Specimen collected 1//25/12 by robert E. Walstrom from the middle bottom of the south wall in the open pit. Photo: Robert E. Walstrom. Camera: Dino0-Lite AD-4013TL digital.
Blue chalcanthite. Specimen collected 1/25/12 by Robert E. Walstrom from the middle bottom of the south wall at the open pit. Photo: Robert E. Walstrom. Camera: Dino-Lite AD-4013TL digital.
Blue chalcanthite. Specimen collected 1/25/13 by Robert E. Walstrom from the middle bottom of the south wall in the pit. Photo: Robert E. Walstrom. Camera: Dino-Lite AD-4013TL digital.
Blue chalcanthite. Specimen collected 1/25/12 by Robert E. Walstrom from middle bottom of the open pit south wall. Photo: Robert E. Walstrom. Camera: Dino-Lite AD4013TL digital.
Blue chalcanthite. Specimen collected 1/25/13 by Robert E. Walstrom from the middle bottom of the south wall of the open pit. Photo: Robert E. Walstrom. Camera; Dino-Lite AD-4013TL digital.
Blue chalcanthite. Specimen collected 1/25/13 by Robert E. Walstrom from the middle bottom of the south wall at the open pit. Photo: Robert Walstrom. Camera: Dino-Lite AD-4013TL digital.
This view west shows the American Girl open pit mine. There is an easy walk down by trail from the top north rim. Photo taken 1/25/12 by Robert E. Walstrom. Camera: Nikon D80 digital.
View east from the Ameraican Girl open pit mine showing Charles (Dave) Walstrom and the boulders at the top of the west wall where the Bismuthian mottramite (Duhamelite) was found. This locality is just a short walk south of the main access road. Photo taken 1/27/13 by Robert E. Walstrom. Camera: Nikon D80 digital.