luigisrocks
off to a rocking start
Member since January 2020
Posts: 10
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Post by luigisrocks on Jan 28, 2020 7:58:10 GMT -5
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Post by fernwood on Jan 28, 2020 8:06:09 GMT -5
Iron concretion?
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Post by rmf on Jan 31, 2020 4:20:03 GMT -5
My guess would be a stream rolled igneous rock high in magnetite. If igneous probably a pyroxene family
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luigisrocks
off to a rocking start
Member since January 2020
Posts: 10
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Post by luigisrocks on Feb 2, 2020 13:55:18 GMT -5
Hello.Yes very likely is magnetite. the outer = Exfoliation Weathering or Onion Skin Weathering. Day sun heats rock night cools causing outer to crack n peel. Thanks to Mr. Randy Korotev. i found online.
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luigisrocks
off to a rocking start
Member since January 2020
Posts: 10
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Post by luigisrocks on Feb 24, 2020 18:01:11 GMT -5
Hey i have a dirty looking almost all white rock with very tiny speckles of black when seen with magnifying glass. seems like mostly quartz and feldspar.the tiny specs either hematite or magnetite. would there be any other types that would be very attracted to magnet.specs are very tiny hardly noticeable from naked eye.specs magnetite ? or hematite
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 24, 2020 18:19:02 GMT -5
Hey i have a dirty looking almost all white rock with very tiny speckles of black when seen with magnifying glass. seems like mostly quartz and feldspar.the tiny specs either hematite or magnetite. would there be any other types that would be very attracted to magnet.specs are very tiny hardly noticeable from naked eye.specs magnetite ? or hematite Nickel and cobalt from Ontario is magnetic - sometimes occurs with quartz, etc. in things like nickeline.
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