TY  - RPRT
TI  - Modal compositions, whole-rock chemical data and normative mineralogy, and minor element data for rocks from alkaline intrusive complexes in northwestern Montana
AU  - T.J. Armbrustmacher
PY  - 1987
DO  - 10.3133/ofr87368
UR  - https://pubs.usgs.gov/publication/ofr87368
ID  - ofr87368
ER  -