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DesertFox22
Novice
0 rep
QUESTION
Help IDing this black heavy specimen from Michigan
Jul 24, 2026 · 35 views
Found this at a rock shop closing sale. It is heavy for its size, black to dark gray, slightly metallic luster. Strong magnetic pull. I am thinking magnetite but the specific gravity seems high. Any ideas? Happy to provide more details or try a streak test.
3 Replies
C
CopperBaron95
Novice
Aug 03, 2026
Scratch it on white tile and post the streak color. That narrows it down to maybe 4 options.
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ObsidianHunter61
Novice
Aug 09, 2026
The specific gravity being high points toward something denser than malachite. Try weighing it in water.
V
VeinSeeker58
Novice
Aug 18, 2026
Scratch it on white tile and post the streak color. That narrows it down to maybe 4 options.