Dave Barthelmy's Image Gallery

Dave Barthelmy's Image Gallery
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Images from Dave Barthelmy

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Dave Barthelmy's Image Gallery With 142 Images

Kampfite Image

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Kampfite: Ba12(Si11Al5)O31(CO3)8Cl5

Comments: Anthony Kampf, Curator and Section Head of the Mineral Sciences Section at the Los Angeles County Museum of Natural History and the person whom kampfite was named for, kindly provided the pronunciation of the mineral kampfite.
Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 12, 2004. Scale: NA.
© Dave Barthelmy

Kampfite Image

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Kampfite: Ba12(Si11Al5)O31(CO3)8Cl5

Comments: Anthony Kampf, Curator and Section Head of the Mineral Sciences Section at the Los Angeles County Museum of Natural History and the person whom kampfite was named for, kindly provided the pronunciation of the mineral kampfite.
Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 12, 2004. Scale: NA.
© Dave Barthelmy

Labradorite Image

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Labradorite: (Ca,Na)(Si,Al)4O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Dual view of a cleavage fragment of labradorite showing the multi-colored labradorescence (schiller effect) and the same area viewed without the color. The color is due to optical interference on Bøggild exsolution lamellae.
Location: Ihosy, Betroka district, Toliara Province, Madagascar. Scale: Picture size 3x3 cm.
© Dave Barthelmy

Labradorite Image

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Labradorite: (Ca,Na)(Si,Al)4O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Dual view of a cleavage fragment of labradorite showing the multi-colored labradorescence (schiller effect) and the same area viewed without the color. The color is due to optical interference on Bøggild exsolution lamellae.
Location: Ihosy, Betroka district, Toliara Province, Madagascar. Scale: Picture size 3x3 cm.
© Dave Barthelmy

Lanarkite Image

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Lanarkite: Pb2(SO4)O

Comments: Cleaved crystals of greenish beige lanakite on matrix.
Location: Leadhills, Scotland. Scale: Picture size 2 cm.
© Dave Barthelmy

Lanarkite Image

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Lanarkite: Pb2(SO4)O

Comments: Cleaved crystals of greenish beige lanakite on matrix.
Location: Leadhills, Scotland. Scale: Picture size 2 cm.
© Dave Barthelmy

Lead Image

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Lead: Pb

Comments: Irregular mass of native lead from a lead-zinc-silver ore deposit.
Location: Broken Hill, NSW, Australia. Scale: 8 cm across.
© Dave Barthelmy

Lead Image

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Lead: Pb

Comments: Irregular mass of native lead from a lead-zinc-silver ore deposit.
Location: Broken Hill, NSW, Australia. Scale: 8 cm across.
© Dave Barthelmy

Livingstonite Image

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Livingstonite: HgSb4S8

Comments: Dark brown, acicular-columnar crystals of livingstonite in anhydrite.
Location: Guerrero, Mexico. Scale: 2x3 cm.
© Dave Barthelmy

Livingstonite Image

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Livingstonite: HgSb4S8

Comments: Dark brown, acicular-columnar crystals of livingstonite in anhydrite.
Location: Guerrero, Mexico. Scale: 2x3 cm.
© Dave Barthelmy

Lizardite Image

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Lizardite: Mg3Si2O5(OH)4

Comments: Lizardite pseudomorphously replacing olivine.
Location: Snarum, Norway. Scale: 2x2 cm.
© Dave Barthelmy

Lizardite Image

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Lizardite: Mg3Si2O5(OH)4

Comments: Lizardite pseudomorphously replacing olivine.
Location: Snarum, Norway. Scale: 2x2 cm.
© Dave Barthelmy

Magnesiotaaffeite-2N2S Image

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Magnesiotaaffeite-2N2S: Mg3Al8BeO16

Comments: Faucetted purple magnesiotaaffeite. These specimens are very rare and un-cut samples ever rarer..
Location: Ceylon gem gravels, Ratnapura, Sri Lanka. Scale: See Image.
© Dave Barthelmy

Magnesiotaaffeite-2N2S Image

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Magnesiotaaffeite-2N2S: Mg3Al8BeO16

Comments: Faucetted purple magnesiotaaffeite. These specimens are very rare and un-cut samples ever rarer..
Location: Ceylon gem gravels, Ratnapura, Sri Lanka. Scale: See Image.
© Dave Barthelmy

Meneghinite Image

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Meneghinite: Pb13CuSb7S24

Comments: Black, acicular crystals of meneghinite on matrix.
Location: Bottino Mine, Tuscany, Italy. Scale: 1x1 cm.
© Dave Barthelmy

Meneghinite Image

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Meneghinite: Pb13CuSb7S24

Comments: Black, acicular crystals of meneghinite on matrix.
Location: Bottino Mine, Tuscany, Italy. Scale: 1x1 cm.
© Dave Barthelmy

Millerite Image

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Millerite: NiS

Comments: Dense tuft of hair-like millerite crystals.
Location: Kerr-Addison mine, Timmons, Ontario, Canada. Scale: Tuft height 5 cm.
© Dave Barthelmy

Millerite Image

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Millerite: NiS

Comments: Dense tuft of hair-like millerite crystals.
Location: Kerr-Addison mine, Timmons, Ontario, Canada. Scale: Tuft height 5 cm.
© Dave Barthelmy

Moeloite Image

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Moeloite: Pb6Sb6S14(S3)

Comments: Dark gray, metallic grains of moelite on white dolomite.
Location: Cava Ceragiola, Seravezza, Lucca, Italy. Scale: Picture size 2 cm.
© Dave Barthelmy

Moeloite Image

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Moeloite: Pb6Sb6S14(S3)

Comments: Dark gray, metallic grains of moelite on white dolomite.
Location: Cava Ceragiola, Seravezza, Lucca, Italy. Scale: Picture size 2 cm.
© Dave Barthelmy
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