Rocks and Minerals Question Marathon

User avatar
Wadhk
Member
Member
Posts: 414
Joined: March 7th, 2011, 4:19 pm
Division: Grad
State: CA
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by Wadhk » November 19th, 2012, 1:12 pm

1. Malachite and Azurite, 2. monoclinic
2014 Events: Entomology, Materials Science, Rocks and Minerals, Scrambler

thsom
Member
Member
Posts: 241
Joined: December 27th, 2011, 10:26 am
Division: C
State: IL
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by thsom » November 19th, 2012, 7:04 pm

Wadhk wrote:
1. Malachite and Azurite, 2. monoclinic
Yup! maybe we should show why though, so we can see reasoning. So, why?

RocksAndMinerals
Member
Member
Posts: 2
Joined: November 22nd, 2012, 6:35 am
Division: C
State: NC
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by RocksAndMinerals » November 22nd, 2012, 6:41 am

I like to think of Malachite being "fuzzy" (or circular, ringed, and very smooth) and green. Azurite is blue and "rocky" and it comes along with Malachite, just like the picture.

Image
Image


Identify both and describe how you arrived at your conclusion.

User avatar
hotchocolate123
Member
Member
Posts: 89
Joined: November 27th, 2011, 3:43 pm
Division: B
State: TX
Location: 37°49′S 175°46′E
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 » November 22nd, 2012, 7:41 am

Ummm the first would be apatite because... well, heres my thought process --> 1) if it's blue it's either azurite, apatite, celestite, fluorite, or tourmaline 2) I ruled out azurite because azurite is usually opaque where this mineral is translucent 3) celestite, fluorite, and tourmaline can't possibly be it because of their cleavage and crystal habit 4) therefor it's azurite

I did the same process for the second but sodalite just popped into my head because sodalite is opaque and dark blue in color
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)

RocksAndMinerals
Member
Member
Posts: 2
Joined: November 22nd, 2012, 6:35 am
Division: C
State: NC
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by RocksAndMinerals » November 22nd, 2012, 11:16 am

1st image is not azurite.
2nd image was correct in your response.

User avatar
hotchocolate123
Member
Member
Posts: 89
Joined: November 27th, 2011, 3:43 pm
Division: B
State: TX
Location: 37°49′S 175°46′E
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 » November 22nd, 2012, 12:16 pm

sorry, I meant apatite :)
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)

User avatar
tuftedtitmouse12
Member
Member
Posts: 778
Joined: January 3rd, 2011, 12:26 pm
Division: Grad
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by tuftedtitmouse12 » November 23rd, 2012, 12:23 pm

ignore
peter, peter, peter

User avatar
hotchocolate123
Member
Member
Posts: 89
Joined: November 27th, 2011, 3:43 pm
Division: B
State: TX
Location: 37°49′S 175°46′E
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 » November 23rd, 2012, 2:44 pm

Sorry for the long wait :)
[img]http://www.johnbetts-fineminerals.com/jhbnyc/gifs/41037.jpg[/img]
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)

User avatar
10manwire
Member
Member
Posts: 69
Joined: October 24th, 2011, 6:24 pm
Division: Grad
Location: Livin' in a big old city
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by 10manwire » November 23rd, 2012, 3:01 pm

Topaz
"If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away." ~ Henry David Thoreau

"We shall never know all the good that a simple smile can do." ~ Mother Teresa

User avatar
hotchocolate123
Member
Member
Posts: 89
Joined: November 27th, 2011, 3:43 pm
Division: B
State: TX
Location: 37°49′S 175°46′E
Has thanked: 0
Been thanked: 0

Re: Rocks and Minerals Question Marathon

Post by hotchocolate123 » November 23rd, 2012, 4:18 pm

Yes ! :D
Your turn
2014 Nationals:
Heredity (5th) Water Quality (7th)
2013 Nationals:
Forestry (4) Heredity (9) Rocks & Minerals (5)
2012 Nationals:
Forestry (3) Rocks & minerals (7) Aquifers (13)

Locked

Return to “2013 Study Events”

Who is online

Users browsing this forum: No registered users and 1 guest