Images of Yooperlites from Pebble beach, Marathon, Ontario
Yooperlites from Pebble beach, Marathon, Ontario Yooperlites are an uncommon fine to coarse-grained gray igneous rock named syenite. It is composed mainly of alkali feldspar and ferromagnesian minerals such as hornblende. Yooperlites are…
Idaho Gemstones by County
Gemstone information is available for the following counties. Information comes from Gemstones of Idaho written by Alice Allebaugh. Reference: Idaho Lands website (I'm reposting here because data has a way of disppearring…
Gemstone Guide for Idaho
This information comes Department of Lands website. I'm reposting here because data has a way of disppearring off the internet. (Reference: Information comes from Gemstones of Idaho written by Alice Allebaugh.)…