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Rock and Mineral Table


Rock Number
Texture
Color
Luster
Fracture or Cleavage
Rock or Mineral/Prediction
1
Rough, slightly smooth
White, clear
Glassy, waxy
Fracture
Rock/Quartzite
2
Smooth
Peach, brown, and white
Glassy
Cleavage
Rock/Marble
3
Very smooth
Black, brownish
Glassy
Cleavage
Rock/Mica
4
Rocky
Grayish
Earthy
Cleavage
Rock/Pumice
5
Slightly rough
Brown, black, white, red
Metallic
Fracture
Rock/Granite
6
Smooth
Black
Glassy
Fracture
Rock/Obsidian
7
Rough
White
Earthy
Fracture
Rock/Pumice
8
Rocky
Multiple Colors
Earthy
Fracture
Rock/Granite
9
Flaky, rough
White
Earthy
Fracture
Rock/Unknown* sedimentary rock
10
Smooth
Gray-brown
Earthy
Cleavage
Rock/Unknown* metamorphic rock
11
A bit rough, smooth
Red, white, brown
Earthy
Cleavage
Mineral/Conglomerate
12
Smooth
Black, Gray
Earthy
Fracture
Rock/Shale
13
Rough
Gray, brown, orange
Earthy
Fracture
Rock/Unknown* sedimentary rock
14
Gritty
Pearly
Pearly
Fracture
Mineral/Quartz
15
Rough
Gray, white
Pearly
Cleavage
Rock/Unknown* metamorphic rock
16
Very smooth
Black
Pearly
Cleavage
Rock/Shale

*Cannot be sure, unrecognizable.




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Rock/Mineral Pictures



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Scientific Method: Salt Crystal Experiment


  1. Problem/Purpose/Question: To understand the difference between a rock and a mineral.
  2. Hypothesis: We predict that the salt mixture will turn into salt crystals.
  3. Materials: Two plastic spoons, two pieces of duct tape, two magnifying glasses, two wooden mixers, two paper cups, hot water, table salt, rocks, and minerals.
  4. Procedure:
    1. Boil water
    2. Put table salt into water
    3. Fill half in both cups
    4. Pour water into both, each two-thirds of the spoon
      JBKR2.jpg
      Water fills up 2/3 of the spoon's capacity.
    5. Let mixture sit for one day
    6. Examine spoon the next day
  5. Data/Observation: The salt crystals were in the spoon.
    JBKR.jpg
    How the salt the finished experiment looks like.
    Though they were not a perfect square, they resembled salt crystals.
  6. CER (Claim, Evidence, Reasoning): Claim: The salt was not visible in the mixture, but was in it. Evidence: The salt dissolved into the water, making a mixture. Reasoning: The salt dissolved into the water, so it could not become into a different substance. This was visible through the salt crystals, because the water evaporated and the salt was reformed and left behind.







Link to Our Voicethread Page Page


We are making a VoiceThread about rock cycle. Please view what we have so far...

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This visitor count is from 3/29/08 10:56 (PST).

Notice


Even though that now our seating chart had changed and we are separated, we might still continue doing the voicethread and other things on this site.
Thank you for your cooperation and time.
JBKR crew
This notice was posted on 6:51 P.M. of 4/3/08.
(The time is in PST UTC-8)