Mineral: Biotite
Like other mica minerals, biotite has a highly perfect basal cleavage, and consists of flexible sheets, or lamellae, which easily flake off. It has amonoclinic crystal system, with tabular to prismatic crystals with an obvious pinacoid termination. It has four prism faces and two pinacoid faces to form a pseudohexagonal crystal. Although not easily seen because of the cleavage and sheets, fracture is uneven. It appears greenish to brown or black, and even yellow when weathered. It can be transparent to opaque, has a vitreous to pearly luster, and a grey-white streak. When biotite is found in large chunks, they are called “books” because it resembles a book with pages of many sheets.
Under cross-polarized light biotite can generally be identified by the gnarled bird's eye extinction.
(Words From http://en.wikipedia.org/wiki/Biotite )
(Picture From http://wannenkopfe.strahlen.org/biotite13.html )
All students are required to participate on a class field trip or complete an alternate assignment.
ReplyDeleteField Trip #1: Kern County East – completed on 10/13/12
Field Trip #2: Kern County West – completed on 10/27/12
Alternate Assignment: Buena Vista Museum of Natural History
Hello fellow classmates,
This is an outdated form!This morning, most of you signed a form that was outdated, therefore today’s signatures are void. What does this mean? It means – ”not to sign” any blank documents!!!! The college is only looking out for themselves. The college is not presenting updated information about the trip.
We haven’t had any safety training about the trip. This trip is poorly plan and lacks planning. I lost total confidence in this trip!
Rule number # 1. Your safety is very important! It just seems that Bakersfield College doesn’t give a damm about it!
YEE HAH! HELLO THERE KERN COUNTY STUDENTS, my name is Enrique and I am cowboy philosopher…… I got more wisdom than 40 Indians, i got more skills than 20 Texas cowboys, i got more elusiveness than 10 Sheriff deputies, and more honesty than 5 smart ass crooks. I love math, but i hate to read books. Today, I’m going to discuss TRIP SAFETY in a creative way!
ReplyDeleteSafety tip to the beautiful ladies:
Ladies make sure your tires are properly inflated, make sure your radiator has proper coolant levels, check your oil, and tell your boyfriend to fully inspect your car,
If your boyfriend refuses to help you inspect your car, tell him, “See yah later!!” and hit your boyfriend with a crow-bar!! YEE HAH!
Safety tip to the ugly gentlemen:
Gentlemen, If your girlfriend refuses to prepare you a good delicious road trip lunch,
Come Christmas time…. Instead of buying an expensive gift for your girlfriend, buy her a full season espisodes of family show called, “The Brady Bunch” Then you get on your girlfriend’s nerves and sing the theme song, “ It’s story of a lovely lady, who couldn’t cook me a good lunch….. so i decided to go to the mall and buy a her a cheap gift called, The Brady Bunch! Yee Hah!
Well students don’t forget to think about trip preparation, just remember it better to be safe than in a dangerous situation! YEE HAH! , YEE HAH
written by: Enrique V.
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