問題一覧
1
It is made up of elements and is naturally occuring solid, inorganic substance whose internal arrangements of atoms is structured.
Minerals
2
% of oxygen
46.4%
3
% of Silicon
28.15%
4
% of aluminum
8.23%
5
% of iron
5.63%
6
% of calcium
4.15%
7
% of sodium
2.36%
8
% of potassium
2.09%
9
% of magnesium
2.35%
10
7 properties of minerals
Luster, Hardness, Crystal form/habit, Color & streak, Cleavage, Density (specific gravity), Others
11
2 types of luster
Metallic luster, Nonmetallic luster
12
It is the quality and intensity of reflected light exhibited by the mineral
Luster
13
Generally opaque and exhibit a resplendent shine similar to a polished metal
Metallic luster
14
Vitreous (glassy), adamantine (brilliant/diamond-like), resinous, silky, pearly, dull (earthy), greasy, among others.
Nonmetallic luster
15
It is a measure of resistance fo a mineral (not specifically surface) to abrasion
Hardness
16
Who created the mohs scale
Friedrich mohs
17
PROS / CONS The test is easy
Pros
18
PROS / CONS The test can be done anywhere, anytime, as long as there is sufficient light to see scratches
Pros
19
PROS / CONS The test is convenient for field geologists with scratch kits who want to make a rough identification of minerals outside the lab
Pros
20
PROS / CONS The scale is qualitative, not quantitative
Cons
21
PROS / CONS The test cannot be used to accurately test the hardness of industrial materials
Cons
22
Hardest mineral
Diamond
23
Softest mineral
Talc
24
This is used to identify the hardness of the mineral, where minerals are compared to other minerals
Mohs scale
25
The external shape of a crystal or group of crystals is displayed/observedas these crystals grow in open spaces
Crystal form/habit
26
It is the natural shape of the mineral before the development of any cleavage or fracture
Crystal form/habit
27
The colors of the minerals itself
Color
28
It is the mineral's color in powdered form
Streak
29
The crystal's form also defines the relative growth of the crystal in ____________
Three dimensions
30
The property of some minerals to break along specific planes of weakness to form smooth, flat surfaces
Cleavage
31
The ratio of the density of the mineral and the density of water
Density (specific gravity)
32
Other properties
Magnetism, Odor, Taste, Tenacity, Reaction to acid
33
7 mineral groups
Native, Silicate, Oxide, Sulfate, Sulfide, Carbonate, Halide
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Minerals containing the two most abundant element in the earth's crust, namely, silicon and oxygen
Silicate
35
Minerals composed of oxygen anion (O2-) combined with one or more metal ions
Oxide
36
Minerals containing sulfur and oxygen in the form of (SO4) - anion
Sulfate
37
Minerals containing sulfur and a metal (2 sulfur)
Sulfide
38
Minerals that are economically important metals such as copper, lead, and zinc
Sulfide
39
Minerals containing the carbonate (CO3)2 - anion combined with other elements
Carbonate
40
Minerals that form as individual elements
Native elements
41
Minerals containing halogen elements combined with one or more metals
Halide
42
Native
Gold, Bismuth, Diamond
43
Silicate
Quartz, Olivine, Talc
44
Oxide
Hematite, Magnetite, Chromite
45
Sulfate
Gypsum, Barite, Anhydrite
46
Sulfide
Pyrite, Galena, Bornite
47
Carbonate
Calcite, Dolomite, Malachite
48
Halide
Chlorine, Fluorine, Halite
49
Mohs hardness scale (start from diamond)
Diamond, Corundum, Topaz, Quartz, Orthoclase, Apatite, Fluorite, Calcite, Gypsum, Talc
50
Materials used in mohs scale
Fingernail, Copper penny, Knife/glass plate, Steel nail, Masonry drill bit
51
Scale number of talc
1
52
Scale number of gypsum
2
53
Scale number of calcite
3
54
Scale number of fluorite
4
55
Scale number of apatite
5
56
Scale number of orthoclase
6
57
Scale number of quartz
7
58
Scale number topaz
8
59
Scale number of corundum
9
60
Scale number of diamond
10
61
Fingernail
2.5
62
Copper penny
3.5
63
Knife/glass plate
5.5
64
Steel nail
6.5
65
Masonry drill bit
8.5