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Chris Clemens' Photo Gallery

2A6-HWFStrontianite

Multiple photos available
Minerva No. 1 Mine, Ozark-Mahoning group, Cave-in-Rock, Cave-in-Rock Mining Sub-District, Hardin Co., Illinois, USA

Dimensions: 13.7 cm x 9.3 cm x 4.5 cm
Weight: 293 g

A large aggregate of radiating, acicular crystals of strontianite, showing a bright blue/white fluorescent response under short wave UV (254nm). This specimen was collected by Ross Lillie in April of 1990 from the Rosiclare Level of the Minerva No. 1 Mine, Cave-In-Rock, Illinois. The size of this specimen is 13.7 x 9.3 x 4.5 cm, and it weighs 293 grams.
Copyright: © Christopher Clemens      Photo ID: 966897     Uploaded by: Chris Clemens   View Count: 5   Approval status: Public galleries    Type: Photo - 6000 x 4000 pixels (24.0 Mpix)

F2C-TY0Margarosanite, Willemite, Prehnite, Axinite-(Mn), Andradite

Multiple photos available
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Dimensions: 79 mm x 32 mm x 25 mm
Weight: 106 g

Margarosanite is a rare calcium lead silicate mineral that shows a beautiful short wave fluorescent response that ranges from blue/white to pastel shades of purple, pink and lavender. For these reasons it is one of the most coveted (and expensive) fluorescent minerals. First discovered in the Parker Shaft of the famous Franklin mine, in Franklin, Sussex County, New Jersey, this remains the classic location for the species. Margarosanite is also found at some of the mines in Filipstad, Värmland County, Sweden, such as Långban and Jakobsberg. The example featured here is from the type location, the Franklin mine, in Franklin, New Jersey. In this photograph, taken under short wave UV (254nm), the margarosanite shows a lovely lavender to pink fluorescent response. Other associated fluorescent minerals in this specimen include willemite (green), prehnite (tan) and manganaxinite (red). This piece also contains non-fluorescent andradite. The size of this striking specimen is 79 x 32 x 25 mm.
Copyright: © Christopher Clemens      Photo ID: 962554     Uploaded by: Chris Clemens   View Count: 28   Approval status: Public galleries    Type: Photo - 6000 x 4000 pixels (24.0 Mpix)

Q8J-6V1Zunyite, Quartz

Multiple photos available
Big Bertha Mine, Middle Camp-Oro Fino Mining District, Dome Rock Mts, La Paz Co., Arizona, USA

Dimensions: 55 mm x 36 mm x 35 mm
Weight: 73 g

Small, octahedral crystals of zunyite show a soft red fluorescent response under short wave UV (254nmn). This specimen was collected from the Big Bertha mine, La Paz County, Arizona.
Copyright: © Christopher Clemens      Photo ID: 962321     Uploaded by: Chris Clemens   View Count: 15   Approval status: Public galleries    Type: Photo - 4496 x 3000 pixels (13.5 Mpix)

948-1DVOpal (Var: Opal-AN)

Multiple photos available
Gunnison Co., Colorado, USA

Dimensions: 56 mm x 52 mm x 31 mm
Weight: 78 g

In this photograph, taken under short wave UV (254nm), bubbly hyalite opal (Opal A-N) shows a green fluorescent response. The opal has formed a layer on a relatively flat surface on what appears to be a half-nodule composed of a coarse brown-colored rock. This specimen was collected from the Blue Mesa Reservoir area of Gunnison County. The green fluorescence is a uranyl-activated response, as evidenced by the radioactivity emitted by this specimen, measured at approximately 90 cpm at 1 cm.
Copyright: © Christopher Clemens      Photo ID: 961437     Uploaded by: Chris Clemens   View Count: 8   Approval status: Public galleries    Type: Photo - 6000 x 4000 pixels (24.0 Mpix)

27E-AWLDumortierite, Quartz

Multiple photos available
Vaca Morta quarry, Serra da Vereda, Boquira, Bahia, Brazil

Dimensions: 104 mm x 89 mm x 50 mm
Weight: 475 g

A thick layer of blue dumortierite on a matrix of milky quartz, from the Vaca Morta quarry, Bahia, Brazil. As seen in the upper image of this composite photograph, the dumortierite fluoresces blue/white under short wave UV (254nm). The lower image was taken under visible light.
Copyright: © Christopher Clemens      Photo ID: 961433     Uploaded by: Chris Clemens   View Count: 22   Approval status: Public galleries    Type: Photo - 2136 x 2817 pixels (6.0 Mpix)

GQ5-FVGFluorite

Multiple photos available
Stoneco White Rock Quarry, Clay Center, Ottawa Co., Ohio, USA

Dimensions: 83 mm x 58 mm x 35 mm
Weight: 166 g

Close-up view of the long wave UV fluorescent response of a cluster of root beer fluorite cubes from the classic Clay Center, Ohio location. Note the zoned pattern of fluorescence within the fluorite cubes. Horizontal FOV approximately 19 mm.
Copyright: © Christopher Clemens      Photo ID: 957217     Uploaded by: Chris Clemens   View Count: 19   Approval status: Public galleries    Type: Photo - 1522 x 1270 pixels (1.9 Mpix)

ANG-DJXSphalerite, Willemite, Franklinite

Multiple photos available
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Dimensions: 92 mm x 50 mm x 18 mm
Weight: 136 g

A beautiful multi-colored fluorescent response is seen under full-wave UV (SW+MW+LW) from this rich sphalerite specimen from the Sterling mine, Sterling Hill, New Jersey. In this photograph, the sphalerite is seen fluorescing various shades of orange, pink and blue. Minor willemite provides green fluorescent accents. The sphalerite is also strongly phosphorescent (see other photographs).
Copyright: © Christopher Clemens      Photo ID: 955861     Uploaded by: Chris Clemens   View Count: 35   Approval status: Public galleries    Type: Photo - 2698 x 1998 pixels (5.4 Mpix)

UY2-5E6Corundum

Multiple photos available
Seiland Island, Alta, Finnmark, Norway

Dimensions: 70 mm x 41 mm x 20 mm
Weight: 56 g

Red-pink crystals of ruby in a grey micaceous matrix, from Seiland Island, Norway. The ruby crystals fluoresce red under long wave UV (see other photograph).
Copyright: © Christopher Clemens      Photo ID: 954731     Uploaded by: Chris Clemens   View Count: 50   Approval status: Public galleries    Type: Photo - 6000 x 4000 pixels (24.0 Mpix)

XV8-83DChalcedony (Var: Agate)

Multiple photos available
Tampa Bay, Tampa, Hillsborough Co., Florida, USA

Dimensions: 10.5 cm x 8.3 cm x 2.9 cm
Weight: 147 g

Sawn and polished specimen of agatized coral from Tampa Bay, Florida. Although these specimens have become scarce in the field, they can still be commonly found at shows. They are often quite aesthetic, showing delicate concentric banding patterns typical of agate. Less known is that this material is often brightly fluorescent and phosphorescent, as seen in this composite image. The upper row shows fluorescence (L) and phosporescence (R) under short wave UV. The bottom row shows the same under long wave UV.
Copyright: © Christopher Clemens      Photo ID: 954723     Uploaded by: Chris Clemens   View Count: 11   Approval status: Public galleries    Type: Photo - 2316 x 2136 pixels (4.9 Mpix)

T1U-CDDGypsum

Multiple photos available
King George Co., Virginia, USA

Dimensions: 63 mm x 44 mm x 36 mm
Weight: 21 g

Cluster of radiating, bladed, gypsum crystals, collected in the early 1980's from clay-rich Eocene sediments in rural King George County, Virginia. These gypsum crystals are fluorescent under UV and are also phosphorescent. The upper image shows bright blue/white fluorescence under short wave UV; the lower image was taken under visible light.
Copyright: © Christopher Clemens      Photo ID: 954714     Uploaded by: Chris Clemens   View Count: 17   Approval status: Public galleries    Type: Photo - 2136 x 2747 pixels (5.9 Mpix)
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