Studying and just something isn't making sense? Post your questions and either myself or a classmate will answer them. JUST REMEMBER TO KEEP YOUR POSTS APPROPRIATE!!! In this section, you should only be posting questions or comments related to our course work.
Test - Monday, May 16th
Studying and just something isn't making sense? Post your questions and either myself or a classmate will answer them. JUST REMEMBER TO KEEP YOUR POSTS APPROPRIATE!!! In this section, you should only be posting questions or comments related to our course work.
9 Comments
Dat Boi
5/15/2016 02:07:57 am
How I tell what becomes Gneiss?
Reply
Ms. Vitberg
5/15/2016 09:39:09 am
You should know that Gneiss forms when a rock with the following mineral composition - mica, quartz, feldspar, amphibole, garnet, and pyroxene (based on the bars in the composition column) undergo regional metamorphism (type of metamorphism column)
Reply
Dat Boi
5/15/2016 11:47:23 am
Why do heat and pressure add minerals to the rock's composition? Also on castle learning it says that gneiss forms from granite. How would it form from that if they don't have the same mineral composition?
Dat Boi
5/15/2016 02:18:11 am
What's the difference between Banding and Mineral Alignment?
Reply
MS. Vitberg
5/15/2016 09:48:56 am
Banding and Mineral Alignment are two different types of foliation. Foliation is stripes. Banding is alternating layers of different colored minerals due to sorting by density. Mineral Alignment is when minerals in the rock are layered - less obvious stripes than Banding - looks more like scratches. You will not have to identify what type of foliation a rock has - you will not have to distinguish between mineral alignment or banding.
Reply
Ms. Vitberg
5/15/2016 12:16:40 pm
Gneiss can form from a variety of rocks - as long as you add heat and pressure to the original rock. A more detailed explanation - Gneiss is defined as a metamorphic rock composed essentially of quartz, feldspar, and mica (which is amphibole) - which Granite is made of. The quartz and feldspar occur together in layers which are separated from each other by thin drawn-out bands of mica. So add heat and pressure to Granite and you'll get Gneiss.
Reply
Danielle y
5/15/2016 04:55:56 pm
Hey,
Reply
Judah
5/15/2016 05:23:09 pm
Can you reset my castle learning?
Reply
Judy N
5/15/2016 08:32:37 pm
Ms. Vitberg, can you reset my castle learning?
Reply
Your comment will be posted after it is approved.
Leave a Reply. |
Archives
June 2016
|