* The Weekly Image Thread 20 06 28 #446 *

Started 1 week ago | Photos thread
19andrew47
OP 19andrew47 Forum Pro • Posts: 36,166
Re: "Nature's Miners," on the XZ-2.

A very colourful image of the quartz David.

If I interpreted correctly what you said this material was the subject of past mining activities.  Why was it mined?  I presume they were looking for precious metals.  There is very little mining that goes on anywhere near where we currently live.  Gypsum is mined perhaps 40 miles from where we live for use in the manufacture of drywall and there are gravel pits nearby that are used for construction materials.  These are open pit mines that generally fill with water and become small 'lakes'.  When we lived in northern Ontario in Wawa long ago there was iron ore mining that was discontinued in the min 1970s.

Andrew

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