See Also: shoshonite(dictionary)

shoshonite (iou)



shoshonite noun. L19.
[from the Shoshone River, Wyoming (cf. SHOSHONE) + -ITE1.]
Geology. A variable basaltic rock containing olivine, augite, and labradorite, with potassium feldspar etc.
shoshonitic adjective resembling or consisting of shoshonite M20.