Rocks and Minerals Question Marathon

[inluvwyth_WANTED]

I would say Calcite and Quartz....I honestly don't know.

[queenelf]

I would say Calcite and Quartz....I honestly don't know.

One of those is correct keep guessing

[syo_astro]

So...just to maybe try to get this moving (Click to Show Hidden Text)

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

[queenelf]

So...just to maybe try to get this moving (Click to Show Hidden Text)

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.

[inluvwyth_WANTED]

Is the coating possibly a rock? It looks way too powdery to be a mineral, and it looks nothing like kaolinite.

[queenelf]

Actually that's what it is! Its a weird specimen and if you can complete the rest of the question your turn

[ali941]

But you said it was a mineral! (Click to Show Hidden Text)

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.

[inluvwyth_WANTED]

I'll revive this since no one's been on here for a while.

HERE IT IS (Click to Show Hidden Text)

[img]http://www.mineralmasterpiece.com/images/Specimens/P1/MMB-604xL2view_Fluorite.jpg[/img]

[vulcanologist1234]

i see (Click to Show Hidden Text)

fluorite but is there another one

[inluvwyth_WANTED]

How'd you know? Correct...