Also, Hattaway offers one of the parks many quartz veins.

The stones were used to crush ore from quartz veins.

The men told glowing accounts of rich gold-laden quartz veins in the region.

During this period, a small test pit was sunk into the quartz vein.

Sigmoidal quartz veins have developed in the foot-wall of the thrust.

Gold-bearing ore was recovered from two groups of quartz veins about a thousand feet apart.

Inward further and further they drove along the barren, white quartz vein.

I was studying an interesting quartz vein," he said, filled with guilt by the lie.

Thus, the place to look for gold is usually in quartz veins near the intrusion of a magma body.

The gold, what there was of it, occurred in quartz veins.