1.
Is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. Also, the ________is the flow of material from one rock type to another over geologic time
2.
Naturally occurring compound or chemical element of atoms in a repetitive pattern
3.
Most apparent property. Usually with metallic luster same color, but varied with non-metallic luster
4.
Appearance of a mineral when light is reflected from its surface
Metallic: look like a metal, opaque, dull if exposed to air
Nonmetallic: Any color
Vitreous:Glass
Dull:Earthy appearance
Greasy: as if covered by oil
5.
Resistance to scratching
Mohs Hardness: Fingernail, copper coin, glass,knife,plate
6.
Color of mineral when powdered
Helps identify metallic lusters because others have a light streak
7.
• Cleavage breaks or cleaves along parallel lines
• Fractures break along random irregular suraces
• Cleavage plains: 3 (90), 2, 1 *6-8 not common
8.
Thin parallel grroves
9.
White to dark grey; nonmetallic; 6 H;white streak; 2 cleavages (almost 90);
striations
Ca=gray to dark grey
Can be peacock blue in some light
Mafic
10.
White to dark grey, nonmetallic; 6 H,white streak; 2 cleavages (almost 90);
striations
Na=Creamy, light
Intermediate
11.
Pink,white,gray,green;Nonmetallic-vitreous luster; 6 H; white streak; 2 cleavages
no striations
Semi-parallel veinlets
Intermediate
12.
Varies in color (smoky, rose, milky..); Nonmetallic- vitreous luster; 7 H; conchoidal fracture;streakless because of hardness
Felsic
13.
Tastes like salt
Sedimentary rocks
Colorless to white; cubic cleavage; 2.5 H; nonmetallic; white streak
14.
Steel to dull red; Red to brown streak; 6 H; Fractured; metallic luster; flaky
Most sedimentary
15.
Micas
Black to brownish black; nonmetallic vitreous; 2.5-3 H; faint gray streak; perfect cleavage; flexible & elastic in thin sheets
Intermediate
16.
Clear, white, faintly colored; nonmetallic-vitreous;3 perfect cleavages; white streak
reacts with dilute hydrochloric acid - Bubbles
17.
Silvery gray;metallic;2.5 H;Gray streak; Cubic cleavage
18.
Gray to black; Metallic, 2-2.5 H,Dark gray streak;one cleavage;greasy luster
19.
Colorless,white;nonmetallic vitreous; 2-2.5 H; one perfect cleavage;white streak
Elastic in this sheets
Felsic
20.
Clear, white, light; 2 H, nonmetallic- vitreous to pearly; one cleavage, white streak
Brittle sheets
21.
Green to black; H 5; 2 imperfect cleavages (90)- hard to see; Nonmetallic-vitreous to dull; White streak
Not splintery-blocky
Mafic
22.
Black; H 5-6;2 perfect cleavages (124 & 56) ; Nonmetallic- vitreous; white streak
Cleavages give splintery look
Intermediate
23.
Dark grey to black; 6 H; metallic; black streak; fractured
Attracted to magnet, high specific gravity
24.
Yellow to green, granular, conchoidal fracture, 6.5-7 H, ;unstreakable-as hard as streak plates
May break into green granules
Mafic
25.
Brass-yellow; 6 H; Metallic; fractured; green to black streak
Fool's Gold