Alkaline Rocks and Carbonatites of the World

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La Perla

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Occurrence number: 
108-00-006
Country: 
Mexico
Region: 
Chihuahua
Location: 
Longitude: -104.58, Latitude: 28.02

The volcanic rocks of the La Perla area of the Sierra de Mestenes are dominantly calc-alkaline, but the Hundido rhyolite, extending in a northwest-southeast-trending area of about 1.5x20 km to the north of La Perla, has a little acmite in the norm (Campbell, 1977, Table 1). The rock generally contains a blue-green amphibole the composition of which has not been determined.

References: 
CAMPBELL, A.R.C. 1977. Volcanic rocks of the La Perla area, Chihuahua, Mexico. Unpublished M.A. Thesis, The University of Texas at Austin. 1-110
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith