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Old 10-16-07, 07:22 AM   #1
CdCf
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Mineral for Jon

At our geology department, there's a display of various rocks and minerals. One is very pretty, and usually pink. Manganese carbonate, MnCO3, with its mineral name Rhodochrosite:









Pretty, huh?
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Old 10-16-07, 07:34 AM   #2
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I happen to have some beads made from that just begging to have some jewelry made from it.
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Old 10-16-07, 07:40 AM   #3
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looks kind of like pink quartz.
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Old 10-16-07, 08:05 AM   #4
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I hate to tell ya but that Rhodochrosite is impure
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Old 10-16-07, 08:06 AM   #5
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I hate to tell ya but that Rhodochrosite is impure
Then it's perfectly fit for Jon.
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Old 10-16-07, 08:56 AM   #6
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I hate to tell ya but that Rhodochrosite is impure
The true colour of the mineral is a pale pink, but of course most samples found in nature are impure. That's common for a lot of minerals.
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Old 10-18-07, 11:26 AM   #7
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I wonder if I could make a sweet pink dagger out of that, so I can pop the tires of middle aged ladies that flip me off on the road.

either way, that is bling BLOW.
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Old 10-18-07, 11:51 AM   #8
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The true colour of the mineral is a pale pink, but of course most samples found in nature are impure. That's common for a lot of minerals.
I thought it was more red in it's pure form no?
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Old 10-18-07, 12:04 PM   #9
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Actually, its streak is white, so I suppose you could say that white is the true colour...
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Old 10-18-07, 07:19 PM   #10
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Rhodonite is the silicate version, much harder than carbonate.








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Old 10-19-07, 01:27 PM   #11
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Rhodochrosite is the Colorado state mineral. I have a bit that I found at the Portland Mine tailings in Ouray, CO.

In the San Juan Mtns of Colorado there are a few of "rhodonite" mines. I've got several samples of it from trips there. This stuff is quite hard to break with a hammer! According to my mineralogy prof, the "rhodonite" is really pyroxmangite (it showed up on one of our Mineralogy Lab tests).
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Old 10-21-07, 01:16 PM   #12
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Bah, the geology around here is boring in that sense. Just granites, greywackes and sedimentary gneisses. About the most interesting thing you could find* here is a pretty beryl (in the pegmatites) or garnet (in the granites). Blah...

* Without using methods beyond unaided human vision...
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