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 » 

1) Pegmatite 2) Breccia
azurite>malachite>chrysocolla
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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 »

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

Post by Magikarpmaster629 » 

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

Post by John Richardsim » 

[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 »

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 »

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).

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Re: Rocks & Minerals B/C 2017

Post by Magikarpmaster629 »

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 »

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
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Re: Rocks & Minerals B/C 2017

Post by Unome »

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 »

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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