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Thomas Cahill's Photo Gallery

Y4J-QFHRiebeckite Root Name (Var: Crocidolite)

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Dimensions: 2 mm x 5 mm x 0.5 mm
Field of View: 0.03 mm

This is a scanning electron microscope (SEM) photograph of "blue asbestos" from the Wittenoom Gorge Mine. Note the 10 micrometer scale on the bottom of the picture. Some of the finer fibers were measured at 0.1 micrometers across. The tiny size of these fibers helps to explain the toxic nature of this mineral.
Copyright: © Thomas Cahill      Photo ID: 846123     Uploaded by: Thomas Cahill   View Count: 55   Approval status: Public galleries    Type: Photo - 512 x 552 pixels (0.3 Mpix)

DAT-JFXScheelite

Three Musketeers Mine, Ellsworth Mining District, Granite Wash Mts, La Paz Co., Arizona, USA

Dimensions: 225 mm x 180 mm x 150 mm
Field of View: 50 mm

This is a close-up photo of a ~5 cm long pod of scheelite in quartz (non- fluorescent matrix).

This particular specimen was collected in the wash downstream from the mine, so it may have been "float" or mined ore that washed down stream.
Copyright: © Thomas Cahill      Photo ID: 802199     Uploaded by: Thomas Cahill   View Count: 39   Approval status: Public galleries    Type: Photo - 2700 x 1800 pixels (4.9 Mpix)

FTX-LNMVanadinite

Apache Mine, Radium, Burch area, Globe Hills, Globe Hills Mining District, Globe-Miami Mining District, Gila Co., Arizona, USA

Dimensions: 60 mm x 40 mm x 10 mm
Field of View: 30 mm
Largest Crystal Size: 1 mm

This is a classic vanadinite specimen from one of the more famous mines for this species. The field of view is approximately 30 mm wide by 20 mm high. The crystals are small (about 1 mm or less) but the color is very good.
Copyright: © Thomas Cahill      Photo ID: 672793     Uploaded by: Thomas Cahill   View Count: 126   Approval status: Public galleries    Type: Photo - 5400 x 3600 pixels (19.4 Mpix)

DGY-ELLWeeksite, Quartz (Var: Chalcedony)

Anderson Mine, Date Creek Basin, Yavapai Co., Arizona, USA

Dimensions: 40 mm x 30 mm x 7 mm
Field of View: 15 mm
Largest Crystal Size: 0.5 mm
Weight: 10 g

The photo shows spherical clusters of yellow weeksite crystals incased in clear chalcedony. This specimen is a little unusual since the weeksite crystals actually embedded in the chalcedony. It appears that the weeksite crystals grew on a host rock and then were later covered by chalcedony. The host rock apparently broke away leaving the weeksite crystals embedded in the chalcedony. The odd aspect of this specimen is that the view is of the bottom of the weeksite aggregates where they had appeared to be attached to the original host rock. There are a few small orange carnotite crystals in upper left hand corner the picture. The chalcedony is fluorescent green in both short wave and long wave UV light. The weeksite does not appear to be fluorescent, but it is a little hard to determine given intensity of the fluorescence of the chalcedony that surrounds the weeksite.

Identification of the weeksite was based on the similarity of the crystal clusters to photos of weeksite reported on Mindat for the same locality. Specimen has not been confirmed by analytical methods.

The field of view is approximately 15 mm wide. Each crystal cluster is less than 0.5 mm.

Specimen collected in March 2015.
Copyright: © Thomas Cahill      Photo ID: 671671     Uploaded by: Thomas Cahill   View Count: 165   Approval status: Public galleries    Type: Photo - 5400 x 3600 pixels (19.4 Mpix)

Main Excavations

Anderson Mine, Date Creek Basin, Yavapai Co., Arizona, USA

This is a view of the main excavations of the mine as seen from the ridge to the north-east of the site. The main excavations are in soft, light gray clay soils that contain the uranium minerals and agate/jasper nodules. Uranium minerals can be easily collected in the middle of these workings. The uranium minerals (mostly carnotite) are fairly small and generally appear as crusts on small fragments of soft rock. Both jasper and agate can be collected in the main excavations, but these minerals have uncertain radioactivity and may not make the best lapidary materials for that reason. Transparent chalcedony in the main workings is somewhat rare and tends to occur in very thin sheets. However, it is intensely fluorescent green in shortwave UV light. Much of the agate is also fluorescent green, but not as bright as the more transparent chalcedony.

Photo taken March 10, 2015.
Copyright: © Thomas Cahill      Photo ID: 671577     Uploaded by: Thomas Cahill   View Count: 333   Approval status: Public galleries    Type: Photo - 2000 x 1333 pixels (2.7 Mpix)

View of eastern section of mine

Anderson Mine, Date Creek Basin, Yavapai Co., Arizona, USA

This photo shows the eastern part of the mine as seen from the main road entering the site. The view is looking north from the ridge on the south side of the site. The white colored ridge in the background has consider quantities of jasper and agate amongst the dark colored rocks along the ridgeline. The main mine excavations are not visible in this photo and they are to the left of this picture behind a ridge.

Photo taken March 10, 2015.
Copyright: © Thomas Cahill      Photo ID: 671575     Uploaded by: Thomas Cahill   View Count: 349   Approval status: Public galleries    Type: Photo - 2000 x 1333 pixels (2.7 Mpix)

Looking north-west towards the mine

Childs-Adwinkle Mine, Copper Creek, Copper Creek, Bunker Hill District, Galiuro Mts, Pinal Co., Arizona, USA

This photograph is looking north-west to the two pits of the Childs-Adwinkle mine.
Copyright: © Thomas Cahill      Photo ID: 533790     Uploaded by: Thomas Cahill   View Count: 273   Approval status: Public galleries    Type: Photo - 2700 x 1800 pixels (4.9 Mpix)

Cut into main pegmatite

Rare Metals Mine, Aquarius Mts, Mohave Co., Arizona, USA

This is a northwards view of a cut into the pegmatite. There are huge feldspar crystals on the right-hand wall of the cut while the left-hand side is more quartz.

The old rail lines shown in another photo of the site (and not visible here) extend south behind the photographer.
Copyright: © Thomas Cahill      Photo ID: 533788     Uploaded by: Thomas Cahill   View Count: 319   Approval status: Public galleries    Type: Photo - 3888 x 2592 pixels (10.1 Mpix)

Rare Metals Mine pegmatite

Rare Metals Mine, Aquarius Mts, Mohave Co., Arizona, USA

This photo shows the main Rare Metals Mine pegmatite in the foreground on the left and the eastern mine workings in the background. The foreground shows the nearly solid quartz core of the pegmatite that was mined.

One of the cuts into the pegmatite is just behind this solid quartz core and not visible in this picture. If you look carefully, you can see two old rail tracks extending into thin air from this cut. The old rails are in the center-right part of the photo. The main mine dump is below these rails.
Copyright: © Thomas Cahill      Photo ID: 533786     Uploaded by: Thomas Cahill   View Count: 370   Approval status: Public galleries    Type: Photo - 3888 x 2592 pixels (10.1 Mpix)

Modern re-creation of ADMMR file photo

Rare Metals Mine, Aquarius Mts, Mohave Co., Arizona, USA

There has been considerable confusion about the location of the Rare Metals Mine. The Arizona Department of Mines and Mineral Resource (ADMMR) file for this mine lists several "potential" locations. Mindat users have added another location for this site. The ADMMR file contains a historical photo of the site. The photo presented here is designed to replicate the photo in the ADMMR file, which it does very well. Therefore, I am confident that this is the location of the Rare Metals Mine. This mine has considerable workings that match the site description unlike the "potential location" coordinates listed in ADMMR file, which appear to be a simple prospect. The location of this site is N34-49-37.50 W113-31-33.13 as was indicated by Mindat users.

The view of this photograph is from the main pegmatite looking east towards the eastern mine workings and the Aquarius Range. The buildings in the distance are a set of ranch buildings and are not related to the mine.
Copyright: © Thomas Cahill      Photo ID: 533784     Uploaded by: Thomas Cahill   View Count: 280   Approval status: Public galleries    Type: Photo - 3888 x 2592 pixels (10.1 Mpix)
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