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Paul Brandes' Photo Gallery

YRH-HXQCentennialite : CaCu3Cl2(OH)6·nH2O (n ~ 0.7)

Centennial Mine, Centennial, Houghton Co., Michigan, USA

Field of View: 1.0 cm

Blue centennialite on epidote and native copper.
More details to follow.
Copyright: © Paul T. Brandes      Photo ID: 840325     Uploaded by: Paul Brandes   View Count: 26   Approval status: Public galleries    Type: Photo - 2048 x 1369 pixels (2.8 Mpix)

8EF-VN3Callaghanite : Cu2Mg2CO3(OH)6·2H2O

Multiple photos available
Champion Mine, Painesdale, Houghton Co., Michigan, USA

Dimensions: 10.0 cm x 12.0 cm

A new mineral for the State of Michigan! In a recent Rocks & Minerals article (Vol. 91, No. 3), a group of researchers examined a strange blue mineral found on refractory fire bricks used during the smelting process. These bricks were found in a creek that ran beside the tailings pile of the Champion Mine, located near Painesdale in Houghton County. At first, the group thought it was azurite because of the deep blue colour. Further testing using EDS, EMP-WDS, SEM, and X-Ray Diffraction methods confirmed that the material was not azurite, but rather callaghanite, a hydrated copper carbonate. It was later discovered that this species was a first for Michigan, truly a unique discovery. This particular fire brick measures 10 x 12 cms in size.
Copyright: © Paul T. Brandes      Photo ID: 840323     Uploaded by: Paul Brandes   View Count: 14   Approval status: Public galleries    Type: Photo - 2048 x 1807 pixels (3.7 Mpix)

J2E-7CVCinnabar : HgS, Quartz : SiO2

Huron River Uranium prospect, Huron River, Baraga Co., Michigan, USA

Field of View: 4.0 mm
Largest Crystal Size: 1.5 mm

This tiny specimen of cinnabar in quartz from the Huron River Uranium Deposit in Baraga County was discovered during my latest trip to Upper Michigan. The vug that contains these cinnabar crystals is approx. 1.5 mm across.
Copyright: © Paul T. Brandes      Photo ID: 840322     Uploaded by: Paul Brandes   View Count: 14   Approval status: Public galleries    Type: Photo - 1632 x 1228 pixels (2.0 Mpix)

TPC-K2MAgate (Var: Lake Superior Agate) : SiO2

Keweenaw Co., Michigan, USA

Dimensions: 5.6 cm

Decent sized Lake Superior Agates like the one featured here are getting much harder these days, especially from the Keweenaw Peninsula; however, there are still spots where one has a chance to find larger examples. This particular Laker was discovered along one of the many rock filled beaches in Keweenaw County. The specimen measures 5.6 cm along its long edge and features a pattern highly sought after by collectors, the "candy-striper".
Copyright: © Paul T. Brandes      Photo ID: 840321     Uploaded by: Paul Brandes   View Count: 17   Approval status: Public galleries    Type: Photo - 2048 x 1365 pixels (2.8 Mpix)

3C9-WT0Chalcedony (Var: Agate) : SiO2

Calumet Township, Houghton Co., Michigan, USA

Dimensions: 4.0 cm

The shores of Lake Superior can yield some pretty interesting mineral specimens if one takes the time to search for them. This Lake Superior Agate was discovered at a county park along Lake Superior northwest of Calumet. The agate measures approx. 4 cm across and shows the typical colouration of such agates. A little less common is the bright yellow patches seen on the edges; most Lakers from the Keweenaw do not exhibit this colouration.
Copyright: © Paul T. Brandes      Photo ID: 840320     Uploaded by: Paul Brandes   View Count: 17   Approval status: Public galleries    Type: Photo - 2048 x 1365 pixels (2.8 Mpix)

D08-8GRChalcedony (Var: Agate) : SiO2

Agua Nueva Mine, Guazapares, Mun. de Guazapares, Chihuahua, Mexico

Dimensions: 5.4 cm

This beautiful agate recently came to me from a collector friend of mine who personally travels to Mexico each year and always comes back with plenty of these agates. This particular specimen comes for the Agua Nueva Mine in Chihuahua State of Mexico. The specimen measures approx. 5.4 cm across along its long side.
Copyright: © Paul T. Brandes      Photo ID: 840319     Uploaded by: Paul Brandes   View Count: 55   Approval status: Public galleries    Type: Photo - 2048 x 1365 pixels (2.8 Mpix)

KYC-554Gypsum (Var: Selenite) : CaSO4·2H2O

Grand Rapids Gypsum Co. Mine, Wyoming, Kent Co., Michigan, USA

Dimensions: 2.4 cm x 1.5 cm

This small specimen of selenite is from the Grand Rapids Gypsum Mine in Wyoming, near the city of Grand Rapids. It measures approx. 2.4 cm (one inch) across and shows multiple small selenite crystals perched on matrix.
Photo ID: 804591     Uploaded by: Paul Brandes   View Count: 24   Approval status: Public galleries    Type: Photo - 2048 x 1470 pixels (3.0 Mpix)

M9L-KD8Chalcocite : Cu2S, Azurite : Cu3(CO3)2(OH)2

Daniel Section 30 gold prospect, Ishpeming Greenstone belt, Marquette Co., Michigan, USA

Field of View: 5.0 mm

This small specimen of chalcocite with azurite is from the Captain Daniels Mine, a very obscure locality with an equally obscure history, located north of Ishpeming in the Marquette Greenstone Belt. The specimen was obtained during the New Mexico Mineral Symposium in 2016.
Photo ID: 804237     Uploaded by: Paul Brandes   View Count: 37   Approval status: Public galleries    Type: Photo - 2048 x 1564 pixels (3.2 Mpix)

A59-MM2Pyrite : FeS2

Ohio Mines, Imperial Heights, Baraga Co., Michigan, USA

Dimensions: 3.5 cm x 3.0 cm

Pyrite is not that rare from the Ohio Mine, but pyrite crystals from here are not common, especially ones this large. This particular specimen was collected from the sparse piles in 2015 and is one of the bigger crystals I have seen from the Ohio in quite some time.
Photo ID: 804214     Uploaded by: Paul Brandes   View Count: 29   Approval status: Public galleries    Type: Photo - 2096 x 1684 pixels (3.5 Mpix)

EQ3-1FQAzurite : Cu3(CO3)2(OH)2

Flambeau Mine, Ladysmith, Rusk Co., Wisconsin, USA

Field of View: 5.0 cm

While the Flambeau Mine will always be known for the spectacular chalcocite specimens it produced, other minerals were also found at the mine. This azurite was found during the short time the mine was in operation between 1993 and 1997. The entire specimen is approx. 6.5 cm tall.
Photo ID: 804203     Uploaded by: Paul Brandes   View Count: 19   Approval status: Public galleries    Type: Photo - 2048 x 1660 pixels (3.4 Mpix)
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