TY - RPRT TI - Garnet xenocryst analyses; potential for diamonds in the Williams Kimberlite, north-central Montana and the Lake Ellen Kimberlite, northern Michigan AU - E. S. McGee PY - 1987 DO - 10.3133/ofr87418 UR - https://pubs.usgs.gov/publication/ofr87418 ID - ofr87418 ER -