Rocks and Minerals Question Marathon

quizbowl · Post by **quizbowl** » March 11th, 2012, 6:24 pm

I know this one! (Click to Show Hidden Text)

Sphalerite
Mineral class? Sulfides
Etymology of name? Greek for "treacherous" I think, had to check ze binder

10manwire · Post by **10manwire** » March 11th, 2012, 6:33 pm

Good job!

quizbowl · Post by **quizbowl** » March 11th, 2012, 7:01 pm

Next (Click to Show Hidden Text)

[img]http://i.imgur.com/UI7rD.jpg[/img]
What is this specific variety called?
Where can you find these in abundance?

hexagonaria · Post by **hexagonaria** » March 11th, 2012, 7:09 pm

goin out on a limb here... (Click to Show Hidden Text)

crystalline quartz, the "herkimer diamond" variety, found in new York.

quizbowl · Post by **quizbowl** » March 11th, 2012, 7:34 pm

hexagonaria wrote:
goin out on a limb here... (Click to Show Hidden Text)
crystalline quartz, the "herkimer diamond" variety, found in new York.

Yus!

hexagonaria · Post by **hexagonaria** » March 13th, 2012, 8:15 am

identify the mineral that makes up this sand (Click to Show Hidden Text)

[img]http://premiumaquatics.com/prodimages/tropiceden/te-reeflakes.jpg[/img]

RespectTheBlade · Post by **RespectTheBlade** » March 13th, 2012, 4:00 pm

Maybe (Click to Show Hidden Text)

Quartz?

HannahD413 · Post by **HannahD413** » March 13th, 2012, 4:47 pm

I think... (Click to Show Hidden Text)

Aragonite

hexagonaria · Post by **hexagonaria** » March 13th, 2012, 4:57 pm

HannahD413 wrote:
I think... (Click to Show Hidden Text)
Aragonite

That it is, my friend, that it is.

HannahD413 · Post by **HannahD413** » March 13th, 2012, 5:11 pm

ID this mineral (Click to Show Hidden Text)

[img]http://www.daviddarling.info/images/apatite.jpg[/img]
Also:
1. What is/are the chemical formula(s) for this mineral?
2. What is its hardness?

Scioly.org