Alkaline Rocks and Carbonatites of the World

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

Haines Point

stripes

Occurrence number: 
174-00-022
Country: 
United States
Region: 
Montana
Location: 
Longitude: -115.58, Latitude: 47.67
Carbonatite: 
No

Haines Point is a syenite complex of approximately 6x2.5 km for which there is no published description. The syenites contain aegirine-augite. Alkaline dykes occur and some fenitization is manifest.

References: 

ARMBRUSTMACHER, T.J. 1982. Geochemical characteristics of rocks in alkaline intrusive complexes, northwestern Montana: preliminary results. Abstracts with Programs, Geological Society of America, 14: 302.
T.J. ARMBRUSTMACHER, personal communication, 1984.

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