Category:Porphyritic andesite

Media in category "Porphyritic andesite"

The following 3 files are in this category, out of 3 total.

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  Porphyritic andesite (Boulder County, Colorado, USA).jpg 2,653 × 2,511; 4.55 MB
  
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  Porphyritic andesite (Kate Peak Formation, Middle Miocene; Lyon County, western Nevada, USA) (15661069958).jpg 2,126 × 1,756; 1.55 MB
  
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  Porphyritic andesite (Sugarloaf Intrusion, Kate Peak Formation, Middle Miocene; Sugarloaf Hill, Six Mile Canyon, east of Virginia City, western Nevada, USA) (15630386757).jpg 3,000 × 2,492; 3.56 MB