I would say Calcite and Quartz....I honestly don't know.
Re: Rocks and Minerals Question Marathon
Posted: April 28th, 2013, 7:25 am
by queenelf
inluvwyth_WANTED wrote:I would say Calcite and Quartz....I honestly don't know.
One of those is correct keep guessing
Re: Rocks and Minerals Question Marathon
Posted: April 28th, 2013, 11:18 am
by syo_astro
1. Was it not quartz and albite? It would make sense that they both form in igneous environments, and they do commonly occur together, for example in plutonic rocks.
2. If it is that then their name origin would be albus or pure white for albite and twarc or hard for quartz
Re: Rocks and Minerals Question Marathon
Posted: April 28th, 2013, 2:47 pm
by queenelf
syo_astro wrote:
1. Was it not quartz and albite? It would make sense that they both form in igneous environments, and they do commonly occur together, for example in plutonic rocks.
2. If it is that then their name origin would be albus or pure white for albite and twarc or hard for quartz
Okay the quartz part is right, and you're on the right track with the white minerals. To clarify, the quartz are the actual crystals and the second mineral is the one coating the quartz. This specimen was from my coach's collection, so it obviously is something not seen normally.
Re: Rocks and Minerals Question Marathon
Posted: April 28th, 2013, 3:18 pm
by inluvwyth_WANTED
Is the coating possibly a rock? It looks way too powdery to be a mineral, and it looks nothing like kaolinite.
Re: Rocks and Minerals Question Marathon
Posted: May 1st, 2013, 11:54 am
by queenelf
Actually that's what it is! Its a weird specimen and if you can complete the rest of the question your turn
Re: Rocks and Minerals Question Marathon
Posted: May 1st, 2013, 6:16 pm
by ali941
Is it opal? Opal is sometimes considered a mineral, and sometimes not. Opal comes from opalle which comes from opalus which comes from opallios which comes from upala-s, meaning, gem.
Re: Rocks and Minerals Question Marathon
Posted: May 7th, 2013, 4:47 pm
by inluvwyth_WANTED
I'll revive this since no one's been on here for a while.
