Rocks and Minerals Question Marathon

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Wadhk
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Re: Rocks and Minerals Question Marathon

Post by Wadhk »

1. Malachite and Azurite, 2. monoclinic
2014 Events: Entomology, Materials Science, Rocks and Minerals, Scrambler
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Re: Rocks and Minerals Question Marathon

Post by thsom »

Wadhk wrote:
1. Malachite and Azurite, 2. monoclinic
Yup! maybe we should show why though, so we can see reasoning. So, why?
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Re: Rocks and Minerals Question Marathon

Post by RocksAndMinerals »

I like to think of Malachite being "fuzzy" (or circular, ringed, and very smooth) and green. Azurite is blue and "rocky" and it comes along with Malachite, just like the picture.

Image
Image


Identify both and describe how you arrived at your conclusion.
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Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 »

Ummm the first would be apatite because... well, heres my thought process --> 1) if it's blue it's either azurite, apatite, celestite, fluorite, or tourmaline 2) I ruled out azurite because azurite is usually opaque where this mineral is translucent 3) celestite, fluorite, and tourmaline can't possibly be it because of their cleavage and crystal habit 4) therefor it's azurite

I did the same process for the second but sodalite just popped into my head because sodalite is opaque and dark blue in color
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2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)
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Re: Rocks and Minerals Question Marathon

Post by RocksAndMinerals »

1st image is not azurite.
2nd image was correct in your response.
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Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 »

sorry, I meant apatite :)
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2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)
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Re: Rocks and Minerals Question Marathon

Post by tuftedtitmouse12 »

ignore
peter, peter, peter
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Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 »

Sorry for the long wait :)
[img]http://www.johnbetts-fineminerals.com/jhbnyc/gifs/41037.jpg[/img]
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)
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Re: Rocks and Minerals Question Marathon

Post by 10manwire »

Topaz
"If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away." ~ Henry David Thoreau

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Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 »

Yes ! :D
Your turn
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
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Forestry (3) Rocks & minerals (7) Aquifers (13)
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