Alkaline Rocks and Carbonatites of the World

Setup during HiTech AlkCarb: an online database of alkaline rock and carbonatite occurrences

Barlow Canyon

stripes

Occurrence number: 
174-00-068
Country: 
United States
Region: 
Wyoming
Location: 
Longitude: -104.75, Latitude: 44.65
Carbonatite: 
No

A small domed (?)sill is seen to intrude sandstones of the Sundance Formation over some 220 m in the bottom of the Barlow Canyon; the lower contact is not exposed. The rock contains phenocrysts of alkali feldspar, aegirine or aegirine-augite and biotite, in a somewhat altered groundmass of feldspar, pyroxene, a brown isotropic substance and accessories including analcime.

References: 

DARTON, N.H. and O'HARRA, C.C. 1907. Devils Tower Folio: Wyoming. Geologic Atlas of the United States: 150

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith