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Trachyandésite latitique (Cantal)

By Yvan

January 11, 2007
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https://www.geoforum.fr/gallery/image/463-trachyand%C3%A9site-latitique-cantal/

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(Ferme de Grompin - N 126 - Cantal)
Roche claire, porphyrique, à sanidine, andésine, oligoclase, biotite et silice sous forme de tridymite. Formation d'un petit dôme dans la brèche cantalienne. (3 cm x 5 cm env.)

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From the album:

Roches volcaniques : photos de produits de volcans français

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91 images
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Taken with Canon Canon PowerShot A95
Focal Length 7.8 mm
Exposure Time 1/500
f Aperture f/7.1

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https://www.geoforum.fr/gallery/image/463-trachyand%C3%A9site-latitique-cantal/

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