Joined: Fri Jun 25, 2010 12:04 am Posts: 257 Location: Idaho
Other than the possible slag, these all look like what I use to pick up as river rock - rounded pieces of granite, quartz, silicious rhyolite, rust stained stuff, etc. But hey, once I found a very small pebble of actual rose (not rust stained) quartz! There were some pegmatites in the area.
When I was 7 or so I would ask my parents what they were - "Leaverite - leaverite there and don't bring them home!" A few decent quartz crystals up to 4 pounds did manage to follow me home.
There are some inexpensive books available with lots of pictures of rocks, minerals and gems. Might be a worthwhile investment.
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