Diatomite Mines (Diatomite Pit North), Quincy, Grant County, Washington, USA(mindat.org)

excerpt

Diatomite - middle Miocene (∼15 Ma) freshwater lacustrine deposit located between flows of the Columbia River Basalt Group.

latitude and longitude

47.05044,-119.98162

mining of

Diatomite Mines

random

reported minerals

diatomite
opal

tags

mindat

website

https://www.mindat.org/loc-30647.html