New Suspected Kimberlite -
By Stephanie Gallegos and Uwe Kackstaetter, Ph.D.
Kimberlite pipes are small in diameter, carrot shaped, geologically elusive, ultra
mafic igneous structures which are penetrating the crust all the way from the mantle.
They often occur in swarms, such as in the Colorado – Wyoming district, are primary
source rocks for diamonds, and are very difficult to detect. A small Kimberlite is
believed to exist in a road cut on County Road 45E and Highway 287, just North of
Virginia Dale, Colorado, in a minor fault line. While first surveys confirmed the
presence of chlorite, a common decompositional mineral of ultra-