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CHY-AUC Osumilite-(Mg) K◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]

Mont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France

Field of View: 2 mm

Hexagonal prismatic crystals of osumilite-(Mg) in a vug of a thermometamorphic enclave ("buchite"). G. Pourtier collection, backscattered electron image (SEM) by E. Médard.

Copyright: © Etienne Médard Photo ID: 778999 Uploaded by: Etienne Medard Upload date: 2016-10-15 View Count: 143 Status: Public galleries Type: Photo - 939×707 (0.7 Mpix)

KC7-XWY Osumilite-(Mg) K◻₂Mg₂Al₃[Al₂Si₁₀O₃₀]

Mont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France

Field of View: 3 mm

Deep blue hexagonal Osumilite-(Mg) crystals in a vug from a thermometamorphic enclave ("bucgite"). G. Pourtier collection, photograph by R. Vernet.

Copyright: © Robert Vernet Photo ID: 778879 Uploaded by: Etienne Medard Upload date: 2016-10-14 View Count: 200 Status: Public galleries Type: Photo - 792×510 (0.4 Mpix)

8AA-NUG Chayesite K◻₂Mg₂(Mg₂Fe³⁺)[Si₁₂O₃₀]

Mont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France

Field of View: 5 mm

Hexagonal chayesite crystals with a coating of tiny hematite crystals. G. Pourtier collection, photograph by R. Vernet

Copyright: © Robert Vernet Photo ID: 739093 Uploaded by: Etienne Medard Upload date: 2016-03-31 View Count: 215 Status: Public galleries Type: Photo - 782×531 (0.4 Mpix)

HY9-1J8 Alunite KAl₃(SO₄)₂(OH)₆

Ravin de la Craie, Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Field of View: 9.15 mm

Colorless micro-crystals of alunite in a cavity of a silicified trachy-andesite. P. & E. Médard collection, photograph by P. Chollet

Copyright: © Pascal Chollet Photo ID: 739092 Uploaded by: Etienne Medard Upload date: 2016-03-31 View Count: 153 Status: Public galleries Type: Photo - 2048×1334 (2.7 Mpix)

TL7-D81 Alunite KAl₃(SO₄)₂(OH)₆

Ravin de la Craie, Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Field of View: 9.4 mm

Colorless micro-crystals of alunite in a cavity of a silicified trachy-andesite. P. & E. Médard collection, photograph by P. Chollet

Copyright: © Pascal Chollet Photo ID: 739091 Uploaded by: Etienne Medard Upload date: 2016-03-31 View Count: 243 Status: Public galleries Type: Photo - 2048×1334 (2.7 Mpix)

385-PYD Alunite KAl₃(SO₄)₂(OH)₆

Ravin de la Craie, Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Field of View: 4.25 mm

Colorless micro-crystals of alunite in a cavity of a silicified trachy-andesite. P. & E. Médard collection, photograph by P. Chollet

Copyright: © Pascal Chollet Photo ID: 739090 Uploaded by: Etienne Medard Upload date: 2016-03-31 View Count: 171 Status: Public galleries Type: Photo - 2048×1334 (2.7 Mpix)

MJ2-ECX Sulphur S₈

Ravin de la Craie, Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Field of View: 2.35 mm

Micro-crystal of sulphur in a cavity of a silicified trachy-andesite. P. & E. Médard collection, photograph by P. Chollet

Copyright: © Pascal Chollet Photo ID: 739088 Uploaded by: Etienne Medard Upload date: 2016-03-31 View Count: 169 Status: Public galleries Type: Photo - 2048×1334 (2.7 Mpix)

E3C-88Y Chayesite K◻₂Mg₂(Mg₂Fe³⁺)[Si₁₂O₃₀]

Mont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France

Hexagonal chayesite crystals with a coating of tiny hematite crystals. Field of view is approximately 3 mm. Collection Georges Pourtier, backscattered electron image (SEM) by Etienne Médard / LMV.

Copyright: © Etienne Médard Photo ID: 445012 Uploaded by: Etienne Medard Upload date: 2012-02-12 View Count: 302 Status: Public galleries Type: Photo - 1024×768 (0.8 Mpix)

NQ9-KYQ Chayesite K◻₂Mg₂(Mg₂Fe³⁺)[Si₁₂O₃₀]

Mont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France

Hexagonal chayesite crystal with a coating of tiny hematite crystals. Field of view is approximately 2 mm. Collection Georges Pourtier, backscattered electron image (SEM) by Etienne Médard / LMV.

Copyright: © Etienne Médard Photo ID: 445011 Uploaded by: Etienne Medard Upload date: 2012-02-12 View Count: 517 Status: Public galleries Type: Photo - 1024×768 (0.8 Mpix)

TRK-Y38 Fluorophlogopite KMg₃(Si₃Al)O₁₀F₂ , Hematite Fe₂O₃ , Enstatite Mg₂Si₂O₆

Puy de Ténuzet quarry, Saint-Ours-les-Roches, Riom, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

Very thin transparent plate of fluorophlogopite, with black hematite and orange-brown enstatite. Field of view is about 2.6 mm across. P. & E. Médard collection, photograph by R. Vernet

Copyright: © Robert Vernet Photo ID: 257769 Uploaded by: Etienne Medard Upload date: 2009-10-18 View Count: 569 Status: Public galleries Type: Photo - 1024×678 (0.7 Mpix)

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Etienne Medard's Photo Gallery

CHY-AUCOsumilite-(Mg) K◻2Mg2Al3[Al2Si10O30]

KC7-XWYOsumilite-(Mg) K◻2Mg2Al3[Al2Si10O30]

8AA-NUGChayesite K◻2Mg2(Mg2Fe3+)[Si12O30]

HY9-1J8Alunite KAl3(SO4)2(OH)6

TL7-D81Alunite KAl3(SO4)2(OH)6

385-PYDAlunite KAl3(SO4)2(OH)6

MJ2-ECXSulphur S8

E3C-88YChayesite K◻2Mg2(Mg2Fe3+)[Si12O30]

NQ9-KYQChayesite K◻2Mg2(Mg2Fe3+)[Si12O30]

TRK-Y38Fluorophlogopite KMg3(Si3Al)O10F2 , Hematite Fe2O3 , Enstatite Mg2Si2O6