Term
|
Definition
Conchoidal Fracture
Hardness 6.5-7
Small Crystals
Igneous
(Rock Forming) |
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Term
|
Definition
Cleavage 2 Right
Hardness 5-6
Igenous, Metamorphic
(Rock Forming) |
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Term
|
Definition
Cleavage 2 at 60* & 120*
Hardness 5-6
Igneous, Metamorphic
(Rock Forming) |
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Term
|
Definition
Cleavage 1
Hardness 2-2.5
Mica
Igneous, Metamorphic
(Rock Forming) |
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Term
|
Definition
Cleavage 1
Hardness 2-2.5
Mica
Igneous, Metamorphic, Sedimentary
(Rock Forming) |
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Term
|
Definition
Conchoidal Fracture
Hardness 7
If Crystals: 6 sided
Can Scratch a Nail
Igneous, Metamorphic, Sedimentary
(Rock Forming) |
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Term
|
Definition
Cleavage 2 Right
Hardness 6
Striations
Igneous, Metamorphic
(Rock Forming) |
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Term
|
Definition
Cleavage 2 Right
Hardness 6
May have colored streaks.
No Striations
Igneous, Metamorphic, Sedimentary
(Rock Forming) |
|
|
Term
|
Definition
Cleavage 3 at 75*(if large crystals)
Hardness 3
Bubbles vigorously in HCl
Sedimentary
(Rock Forming) |
|
|
Term
|
Definition
3 at 75* (Not Common)
Hardness 3.5-4
Bubbles slightly in HCl
Sedimentary
(Rock Forming) |
|
|
Term
|
Definition
Cleavage 1
Hardness 1-2
Greasy Feel, Marks Paper
Black Streak
(Economic) |
|
|
Term
|
Definition
Cleavage 3 Right
Hardness 2.5
Lead Gray Streak
Very Heavy
(Economic) |
|
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Term
|
Definition
Cleavage 6
Hardness 3.5-4
Streak has sulfur odor
Yellow-Brown Streak
(Economic) |
|
|
Term
|
Definition
Uneven Fracture
Hardnes 6-6.5
Green-Brown Streak
Heavy
Fool's Gold
(Economic) |
|
|
Term
|
Definition
Uneven Fracture
Hardness 5.5-6.5
Red Streak
Heavy
(Economic) |
|
|
Term
|
Definition
Uneven Fracture
Hardness 5.5-6.5
Magnetic
Black Streak
Heavy
(Economic) |
|
|
Term
|
Definition
Uneven Fracture
Hardness 1-5.5
Earthy
Yellow-Brown Streak
(Economic) |
|
|
Term
|
Definition
Cleavage 3 Right
Hardness 2.5
Salty Taste
(Economic) |
|
|
Term
|
Definition
Cleavage 4
Hardness 4
IL State Mineral
Nail Can Scratch It
(Economic) |
|
|
Term
|
Definition
Cleavage 1 Good
Hardness 2
Tabular Crystals/Fibers/Small Grain Masses
(Economic) |
|
|
Term
|
Definition
Conchoidal to Uneven Fracture
Hardness 6.5-7.5
(Economic) |
|
|
Term
|
Definition
Cleavage 1
Hardness 1-1.5
(Economic) |
|
|
Term
|
Definition
Irregular Fracture
Hardness 1-2.5
Microscopic Grains
Earthy Odor When Breathed On
Smooth Feel
(Economic) |
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Term
|
Definition
|
|
Term
|
Definition
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|
Term
|
Definition
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|
Term
|
Definition
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Term
|
Definition
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Term
|
Definition
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Term
|
Definition
| The decomposition of a ray of light into two rays when it passes through certain anisotropic materials, like in Calcite.(Seeing Double) |
|
|
Term
|
Definition
Lubricant for Locks
Mixed with Clay for Lead Pencils |
|
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Term
|
Definition
Car Batteries
Industrial Chemicals
Radiation Shields |
|
|
Term
|
Definition
| Galvanizing sheet metal for rust protection. |
|
|
Term
| Pyrite, Limonite, Hematite, Magnetite (Iron Ores) |
|
Definition
Steel
Cars
Ships
Construction |
|
|
Term
|
Definition
Deicing Agent
Seasoning
Industrial Chemicals
Preservative |
|
|
Term
|
Definition
Flux in steel making
Industrial Chemicals
Fluoride Toothpaste |
|
|
Term
|
Definition
Plaster Board
Plaster of Paris
Alabaster Boxes |
|
|
Term
|
Definition
High quality abrasive sand papers.
Gem is flawless. |
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Term
|
Definition
| Ground and mixed with perfume for body powder. |
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Term
|
Definition
Ceramics
Slick Magazines Filler |
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