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Kyle Beucke's Photo Gallery

OLYMPUS DIGITAL CAMERA
Photo ID: 967372     Uploaded by: Kyle Beucke   View Count: 1   Approval status: User gallery    Type: Photo - 3257 x 2185 pixels (7.1 Mpix)

3F1-N2YTetrahedrite

Multiple photos available
Red Gap Mine, Loope, Monitor - Mogul Mining District, Alpine Co., California, USA

Field of View: 3 mm

This mineral has the appearance of tetrahedrite (black, brittle, uneven fracture). It occurs as grains in gray, altered rock. Some of the grains are closely associated with galena. Both this mineral as well as galena occur disseminated, or filling fractures in gray, altered rock. There has apparently been some silicification of the rock, but these sulfides and sulfosalts are not in obvious quartz veins.

EDS analysis suggests silver-bearing tetrahedrite (see child image).
Photo ID: 839406     Uploaded by: Kyle Beucke   View Count: 63   Approval status: Public galleries    Type: Photo - 2883 x 2373 pixels (6.8 Mpix)

EGX-E59Hessite

Multiple photos available
Silverado Mine, Wheeler Peak, Patterson Mining District, Sweetwater Mts, Mono Co., California, USA

Field of View: 3 mm

Hessite (EDS-verified; see child image) filling space between quartz crystals.

FOV ~3mm.
Photo ID: 818161     Uploaded by: Kyle Beucke   View Count: 83   Approval status: Public galleries    Type: Photo - 1021 x 843 pixels (0.9 Mpix)

J3N-766Jarosite

Multiple photos available
Serita Mine, New York Hill, Masonic Mining District, Bodie Hills, Mono Co., California, USA

Field of View: 1 mm

Yellow crystals of jarosite (see child image EDS analysis) in what appears to be altered (silicified?) volcanic rock.

Field of view ~1mm.
Photo ID: 808669     Uploaded by: Kyle Beucke   View Count: 82   Approval status: Public galleries    Type: Photo - 1246 x 849 pixels (1.1 Mpix)

70U-Q96Goldfieldite

Multiple photos available
Pittsburg-Liberty Mine, New York Hill, Masonic Mining District, Bodie Hills, Mono Co., California, USA

Field of View: 3 mm

From the gold-bearing quartz vein sample depicted in image 768911. There appear to be at least two copper sulfosalts present in this sample, a bronzy-brown one (possibly luzonite/famatinite) and this black one, which was identified as goldfieldite based on color, estimated hardness of other similar grains, and two EDS analyses (of this grain and another one) indicating a Cu-Te-S mineral with minor As. See child image for EDS analysis of this grain. In addition, a green mineral (see image 769026) apparently resulting from the weathering of other apparent goldfieldite in the same specimen was identified (with EDS) as a copper tellurate.

This and the other EDS-analyzed goldfieldite grain were scanned under the SEM for gold inclusions. Tiny (perhaps on the order of 10-50 microns), sparse inclusions of gold (high-fineness gold and gold-copper alloy) were observed in the sulfosalt. See second child image of an EDS analysis of an inclusion of gold-copper alloy observed in quartz in this goldfieldite grain.

Field of view ~ 3mm.
Photo ID: 769030     Uploaded by: Kyle Beucke   View Count: 264   Approval status: Public galleries    Type: Photo - 1170 x 835 pixels (1.0 Mpix)

06Q-T2WChlorargyrite (Var: Bromian Chlorargyrite)

Multiple photos available
Commonwealth Mine, Pearce, Pearce Mining District, Pearce Hills, Sulphur Springs Valley, Cochise Co., Arizona, USA

Field of View: 2 mm

See child image for EDS analysis.
Photo ID: 768893     Uploaded by: Kyle Beucke   View Count: 93   Approval status: Public galleries    Type: Photo - 681 x 437 pixels (0.3 Mpix)

PEW-5RCHessite

Multiple photos available
Silverado Mine, Wheeler Peak, Patterson Mining District, Sweetwater Mts, Mono Co., California, USA

Field of View: 4 mm

Hessite (massive, silvery-gray) filling space between quartz crystals.

Identification based on:
-EDS of a grain pulled from the silvery portion furthest to the right in the photograph.
-Sectility (a steel pin was pressed into the mineral, which was able to be deformed without crumbling, similar to acanthite).
-Silvery-gray color.
Photo ID: 763300     Uploaded by: Kyle Beucke   View Count: 158   Approval status: Public galleries    Type: Photo - 1264 x 848 pixels (1.1 Mpix)

02U-HGPHessite

Multiple photos available
Silverado Mine, Wheeler Peak, Patterson Mining District, Sweetwater Mts, Mono Co., California, USA

Field of View: 3 mm

Hessite crystal(s) in quartz vug. Largest crystal in center, was identified with EDS. It has a rounded/melted appearance.

Identification based on:
-EDS analysis of this crystal (it was sacrificed for the analysis); see child image.
-Color (silver-gray).

Photo ID: 763297     Uploaded by: Kyle Beucke   View Count: 181   Approval status: Public galleries    Type: Photo - 1222 x 720 pixels (0.9 Mpix)

8PR-V6GGold

Multiple photos available
Pittsburg-Liberty Mine, New York Hill, Masonic Mining District, Bodie Hills, Mono Co., California, USA

Field of View: 1.5 mm

Gold (the two deep yellow grains towards the top of the photograph) in fine-grained quartz. Other metallic minerals are visible in the photograph and include probable iron sulfide (in the center of the photograph) and probable copper sulfosalts (black).

Gold identification based on:
-One of these two imaged grains was analyzed with EDS, indicating pure gold (see child image).
-Color.
-Malleability: Several similar-appearing grains in same sample were pressed (carefully!) with a steel pin under the microscope; instead of crumbling, they flattened and retained their shining, metallic appearance.
-Presence in a vein sample that assayed high in gold (2.6 troy ounces per short ton).
Photo ID: 763296     Uploaded by: Kyle Beucke   View Count: 164   Approval status: Public galleries    Type: Photo - 1245 x 809 pixels (1.0 Mpix)

4VU-99HEnargite

Morning Star Mine, Mogul Peak, Monitor - Mogul Mining District, Alpine Co., California, USA

Field of View: 12 mm

Enargite crystals in matrix of pyrite (and probably altered rock as well).
Photo ID: 732948     Uploaded by: Kyle Beucke   View Count: 114   Approval status: Public galleries    Type: Photo - 1227 x 837 pixels (1.0 Mpix)
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