Search found 7 matches

by dechirico
April 20th, 2017, 5:36 pm
Forum: 2017 Study Events
Topic: Rocks and Minerals B/C
Replies: 104
Views: 20609

Re: Rocks and Minerals B/C

Any advice distinguishing diatomite from chalk? I don't have a Rocks & Min box to practice with, so I'm afraid I'm a bit rusty in physical identification.
by dechirico
April 15th, 2017, 3:12 pm
Forum: 2017 Question Marathons
Topic: Rocks & Minerals B/C
Replies: 208
Views: 22724

Re: Rocks & Minerals B/C

Magikarpmaster629 wrote:
dechirico wrote:Awesome! Now, next question:
1. ID the mineral. 2. What kind of rocks does this specimen most widely occur in?
Image
Hmm, 1. Albite plagioclase 2. Felsic igneous rock
Ahhh, sorry for the delay. You're right, though!
by dechirico
April 7th, 2017, 12:59 pm
Forum: Posting Games
Topic: Predict what the person below you will be like
Replies: 7318
Views: 334619

Re: Predict what the person below you will be like

TPBM has never done a lab event.
Nah. I've done Chem Lab and Crime Busters. Granted, I didn't like them very much, so now I stick to Earth Science events.
TPBM is currently procrastinating on Physics homework.
by dechirico
April 7th, 2017, 12:46 pm
Forum: 2017 Study Events
Topic: Rocks and Minerals B/C
Replies: 104
Views: 20609

Re: Rocks and Minerals B/C

Anyone else notice that actinolite and tremolite are the same mineral with differing percentages of Magnesium and Iron? What could be used to differentiate? Well, tremolite is much cheaper, so it'll most likely be that in competitions :D On a more specific note, I've noticed that actinolite is a sl...
by dechirico
April 7th, 2017, 12:38 pm
Forum: 2017 Question Marathons
Topic: Rocks & Minerals B/C
Replies: 208
Views: 22724

Re: Rocks & Minerals B/C

Awesome! Now, next question:
1. ID the mineral. 2. What kind of rocks does this specimen most widely occur in?
Image
by dechirico
April 7th, 2017, 11:31 am
Forum: 2017 Question Marathons
Topic: Rocks & Minerals B/C
Replies: 208
Views: 22724

Re: Rocks & Minerals B/C

Ah, that makes sense. Answer below: 2. Nonclastic-- it's formed through evaporation
by dechirico
April 6th, 2017, 8:36 pm
Forum: 2017 Question Marathons
Topic: Rocks & Minerals B/C
Replies: 208
Views: 22724

Re: Rocks & Minerals B/C

Let's hope this is right: 1. Travertine 2. Sedimentary (limestone) 3. Deposits by mineral springs

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