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Re: Rocks & Minerals B/C

Posted: September 11th, 2016, 7:01 pm
by Cherrie_Lan
Quartz (jasper), 2.5-2.9, iron inclusions.

Re: Rocks & Minerals B/C

Posted: September 11th, 2016, 7:22 pm
by bhavjain
Correct.

Re: Rocks & Minerals B/C

Posted: September 12th, 2016, 5:04 pm
by Cherrie_Lan
Image

ID, and state a special characteristic about this mineral.

Re: Rocks & Minerals B/C

Posted: September 12th, 2016, 7:06 pm
by Magikarpmaster629
Cherrie_Lan wrote:Image

ID, and state a special characteristic about this mineral.
Fluorite; a special characteristic is that it has two main forms. This one, the cubic form, forms at low temperature, whereas the rarer octahedral form occurs in high temperature environments.

Re: Rocks & Minerals B/C

Posted: September 12th, 2016, 7:25 pm
by bhavjain
Cherrie_Lan wrote:Image

ID, and state a special characteristic about this mineral.
Fluorite. Exhibits the phenomenon of fluorescence (violet-blue) and thermoluminescence.

Re: Rocks & Minerals B/C

Posted: September 12th, 2016, 9:36 pm
by bhavjain
Which of the following shows the (011) plane correctly drawn?
Image

Re: Rocks & Minerals B/C

Posted: September 14th, 2016, 4:29 pm
by Cherrie_Lan
To my question above: Both Karp and Bhavjain are correct! :D

Re: Rocks & Minerals B/C

Posted: September 14th, 2016, 10:27 pm
by deji725
Ask more pls. I need to practice

Re: Rocks & Minerals B/C

Posted: September 15th, 2016, 2:34 pm
by Magikarpmaster629
bhavjain wrote:Which of the following shows the (011) plane correctly drawn?
Image
B

Re: Rocks & Minerals B/C

Posted: September 15th, 2016, 3:49 pm
by bhavjain
Magikarpmaster629 Correct! Your turn.