Rocks & Minerals B/C 2017

Test your knowledge of various Science Olympiad events.
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azuritemalachite
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Re: Rocks & Minerals B/C 2017

Post by azuritemalachite » August 7th, 2016, 6:05 pm

1) Pegmatite 2) Breccia
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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 » August 8th, 2016, 9:32 am

azuritemalachite wrote:
1) Pegmatite 2) Breccia
Both wrong!
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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 » August 12th, 2016, 9:46 am

1. Rhyolite and 2. Andesite
Anyone can go now
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Re: Rocks & Minerals B/C 2017

Post by John Richardsim » August 12th, 2016, 10:48 am

[img]http://i.imgur.com/IQL3JNQ.png[/img]
(Taken from the Minerals Identification Flowchart on soinc)
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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 » August 13th, 2016, 7:46 am

John Richardsim wrote:
[img]http://i.imgur.com/IQL3JNQ.png[/img]
(Taken from the Minerals Identification Flowchart on soinc)
1. Galena
2. Goethite
3. Olivine
4. Malachite
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Re: Rocks & Minerals B/C 2017

Post by John Richardsim » August 13th, 2016, 3:29 pm

Magikarpmaster629 wrote:
John Richardsim wrote:
[img]http://i.imgur.com/IQL3JNQ.png[/img]
(Taken from the Minerals Identification Flowchart on soinc)
1. Galena
2. Goethite
3. Olivine
4. Malachite
All right (number 2 is actually hematite, but given the description in the flowchart your response applies).

Your turn.
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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 » August 13th, 2016, 4:12 pm

Gah, hematite is annoying. Anyway:
Image
1. What kind of diagram is this and what is it used for?
2. What is the mineral group described in the diagram?
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Re: Rocks & Minerals B/C 2017

Post by azuritemalachite » August 13th, 2016, 7:12 pm

John Richardsim wrote: All right (number 2 is actually hematite, but given the description in the flowchart your response applies).
For future reference, goethite is not silver and is also not metallic (also kind of magnetic? I remember seeing a goethite/limonite specimen that was just barely magnetic). Sorry, I just wanted to kind of clear that up.
azurite>malachite>chrysocolla
Come to Pangea today all around the globe. Our formal dinners are to die for! All dishes served on tectonic plates.
Don't be Angara that all the jokes are Gondwana.
PM any rock or mineral question! :arrow:

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Re: Rocks & Minerals B/C 2017

Post by Unome » August 14th, 2016, 8:13 am

Magikarpmaster629 wrote:Gah, hematite is annoying. Anyway:
Image
1. What kind of diagram is this and what is it used for?
2. What is the mineral group described in the diagram?
1. Solid-solution series
2. Feldspar
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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 » August 14th, 2016, 8:16 am

Unome wrote:
Magikarpmaster629 wrote:Gah, hematite is annoying. Anyway:
Image
1. What kind of diagram is this and what is it used for?
2. What is the mineral group described in the diagram?
1. Solid-solution series
2. Feldspar
I was looking for what the diagram is called, which is a ternary diagram, but otherwise correct!
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