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Mineral Properties Flashcards

(109 cards)

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1
Q

Property: The common external morphology that a mineral assumes during an unobstructed growth wether isolated or in aggregates

A

HABIT

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2
Q

A habit that is diskette like or tablet crystal somewhat flattened in one direction

A

TABULAR

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3
Q

A habit that is pillar like or stubby like of an elongated crystal with well developed prism

A

PRISMATIC

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4
Q

a habit that is needle like and slightly thicker than fliform

A

ACICULAR

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5
Q

A hair like habit

A

CAPILLARY

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6
Q

A thin wire habit

A

FLIFORM

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7
Q

A habit that exhibits narrow bands of different colors as textures

A

BANDED

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8
Q

A crystal habit exhibiting a stout - column like individuals

A

COLUMNAR

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9
Q

Property: An assemblage of isolated habit of same crystals or multiple crystals closely adjacent to one another produces an assemblage of similar crystals

A

AGGREGATES HABITS

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10
Q

An aggregrate habit resembles somewhat bunches of grapes

A

BOTRYOIDAL

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11
Q

An aggregate habit of plates approximately parallel about a common center

A

CONCENTRIC

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12
Q

A crystal aggregate of separate from a thicker stem into several more slender ones, similar to branches which divide into smaller sheets

A

DENDRITIC

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13
Q

An aggregate where prismatic crystals are radiating from a center or common area

A

DIVERGENT

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14
Q

An aggregate where surfaced layers are covered with small crystals

A

DRUSY

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15
Q

An aggregate or groups of parallel slender thread-like strands; need not be easily separable.
Hefferan : Parallel arrangement of Acicular or fliform crystals

A

FIBROUS

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16
Q

An aggregate that separates easily into plates or leaves

A

FOLIATED

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17
Q

A common expression of aggregates with cavity line of small crystals

A

GEODE

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18
Q

An aggregates of large or small grains.

Hefferan: sub - equant macroscopic crystal aggregate a granular appearance.

A

GRANULAR

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19
Q

An aggregate of radiating individuals forming small spherical or hemispherical groups

A

GLOBULAR

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20
Q

An aggregate of rounded masses similar to the botryoidal form but the protuberances are more flattened

A

MAMILLARY

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21
Q

Compact crystalline aggregates with no regular forms.

Hefferan: Aggregate of very small with a fine-grained appearance.

A

MASSIVE

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22
Q

An aggregate of splitting readily into exceedingly thin plates or sheets

A

MICACEOUS

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23
Q

aggregate of small sphere the size of fish roe

Hefferan: spherical, concentrically layered, sand sized (<2mm)

A

OOLITIC

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24
Q

small globular aggregates about the size of peas or in round concretionary grains

Hefferan: spherical, concentrically layered, gravel sized aggregates

A

PISOLITIC

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25
An aggregate of rounded grape- like or kidney-shaped masses
RENIFORM
26
An aggregate of lattice-like or network arrangement of slender columnar or threads. Hefferan: Lattice work of tabular to bladed crystals
RETICULATED
27
An aggregate of grains having the size of granulated sugar grains
Saccharoidal
28
An aggregateresembling pendant cylinders or cones
STALACTITIC
29
An aggregate forming a radiating individuals forming star-like or circular groups
STELLATED
30
Property of a mineral surface which results from the manner it reflects the incident light
Luster
31
Luster: dazzling luster recognizable even at a considerable distance connected with smooth and generally even surface
Splendent
32
Luster: distinctly observed only on closer observation and is generally related to an uneven sample
Shining
33
Luster: feebly appearing luster even within a short distance
Weakly Shining
34
Luster: when only a feeble light is reflected by some of the minute aggregated parts constituting the surface
Glimmering
35
Luster: surface does not reflect any light
Dull
36
Luster: bright reflectance of a metallic surface
Metallic Luster
37
Luster: duller reflectance observed when most of the light passes into the mineral and only a small portion of the incident light is reflected from the surface
Non Metallic
38
Luster: piece of broken glass
Vitreous or glassy luster
39
Luster: Brilliant or almost Oily
Adamantine or the luster of diamond
40
luster: lusterof a piece of resin, greasy luster
Resinous or waxy
41
Luster: common when a mineral has a very perfect cleavage and hence partially separated into thin plates
Pearly
42
luster: characteristic of some minerals in fibrous aggregates
Silky, the luster of a skin of silk or a piece of satin
43
Relative ability of minerals to allow light to pass through them
Diaphaneity
44
Diaphaneity: when all objects may be distinctly recognized through a large or small pieces of it.
Transparent
45
Diaphaneity: when a blurred image of the object can be seen through a thin small piece of it.
Semitransparent
46
Diaphaneity: where no object can be perceived through it but light is transmitted only through the edges of a large piece or through a small piece. If the mineral shines through the extremities or edges when held against the light, it is said to be translucent at the edge.
Translucent
47
Diaphaneity: when no perceptible degree of light is transmitted even through the thinnest piece.
Opaque
48
ratio of velocity of light in air and its lesser velocity in the dense medium When light passes form one medium into another of greater refractive index, it is reflected, that is bent toward the normal, to the surface. The greater the bending, the higher the refractive index
Refractive index
49
The effect produced by the combination of wavelengths of light incident on the surface of the mineral reaching the observer’s eyes
Color
50
a play of colors or colored reflections exhibited especially | by labradorite and caused by internal structures that selectively reflect only certain colors
LABRADORESCENCE (SCHILLER EFFECT)
51
Colors: transition elements | - V, Cr, Mn, Fe, Co, Ni, Cu
Chromophores
52
exhibits internally the various prismatic colors when the mineral is turned
Play of Colors
53
appearance of different colors when an crystal is viewed in transmitted light in different directions
Pleiochroism
54
two directions have distinct colors
Dichroism
55
pearly reflection from the interior of a mineral, like the effect of a glass of water to which a few drops of milk have been added
Opalescence
56
shows a series of colors due to light undergoing reflective interferences with itself either on the surface or in the interior.
Iridiscence
57
band of light moves from side to side as in a cat’s eye
chayotancy
58
Colors: six-pointed star, formed by a beam of light at right angles to each set of inclusions
Asterisms
59
on exposure to ultraviolet light, a mineral emits visible | light
Flourescence
60
some fluorescent minerals will continue to glow after the ultraviolet light has been turned off
Phosphorescence
61
some minerals when heated below red heat will emit visible light
Thermoluminescence
62
some minerals when rubbed or struck with a hammer will emit light ex. Milky quartz rubbed against each other
Triboluminscence
63
Color of the powder of the mineral
streak
64
A marked tendency to break or split easily in certain well-defined directions yielding more or less smooth surfaces which are parallel to the crystal faces or possible crystal system Crystal surface should also be categorized as well or poorly developed depending on the ease and neatness on the way cleavage planes cleave or separate.
Cleavage
65
A plane of structural weakness in a mineral
PARTING
66
The appearance of the surface of a mineral when it does not break along cleavage planes
Fracture
67
Fracture: if the surface is not interrupted by many noticeable protuberances but with few small scales
Scaly
68
Fracture: – if the surface has no protuberances or very few indeterminate and mostly flat ones
Even
69
Fracture: if the surface consists of flat rounded protuberances accompanied by circular grooves as in clam shells.
Conchoidal
70
Fracture: also angular or irregular) – if the surface is entirely interrupted by angular large and small protuberances
Uneven
71
Fracture: if surface is jagged and with sharp edge
Hackly
72
Fracture: certain larger parts resembling fibers can be | distinguished on the surface as in wood
Fibrous
73
Fracture: if surface is made up of parts resembling planes with length and breadth nearly equal (folia)
Foliated
74
Hardness: hardness of Fingernail
2.5
75
Hardness: Hardness of copper penny
3.5
76
Hardness: hardness of glass or knife blade
5.5
77
A number which expresses the ratio between the weight of the mineral and the weight of an equal volume of water at 4 degrees Celsius
Specific gravity
78
crystallography controlled intergrowths of 2 or more crystals of the same mineral
Twinning
79
whether there is a center, a plane, or an axis of twinning and gives the crystallographic orientation for the twin axis or plane
Twin law
80
an imaginary axis about which the crystals can be rotated to bring into coincidence with the other.
Twin Axis
81
is a point about which the crystal may be inverted to bring into coincidence with the other.
Twin Center
82
is a mirror plane reflecting the image of one crystal across it.
Twin plane
83
a surface or plane on which the two individuals are united
Composition Surface
84
Fizzling sound heard, combined with bubbling seen where a carbonate mineral reacts with an acid.
Effervescence
85
can be flattened
Tenacity
86
can be changed in shape by pressure; capable of being drawn into the form of a wire
Ductility
87
can be cut by a knife
Sectility
88
separates into fragments
Brittleness
89
capable of being bent or pulled out of shape
Elasticity
90
bend easily and stays bent after the pressured is removed
Flexibility
91
property of a mineral to be attracted to a hand magnet
Magnetism
92
strongly attached
Ferromagnetism
93
slightly attracted
Paramagnetic
94
not attracted
Diamagnetic
95
mineral that lack the presence of a transition metal or other magnetic ions
Diamagnetic
96
magnetic ions in a mineral have a completely random orientation
Paramagnetic
97
natural tendency for pairs of magnetic ions to align in opposite directions so that there is spin paring between adjacent magnetic ions
Antiferromagnetism
98
there is an excess of magnetic ions aligned in one particular direction.
Ferrimagnetism ( found in magnetite and pyrrhotite)
99
there is an excess of magnetic ions aligned in one particular direction.
Piezoelectricity
100
induced by heating crystals lacking a symmetric center.
Pyroelectricity
101
taste of common salt
Saline
102
soda
Alkaline
103
Epsom Salt
Bitter
104
Acid
Sour
105
Iron Vitriol
Astringent
106
Alum
Sweetish Astringent
107
Saltpeter
Cooling
108
Garlic odor
Arsenopyrite
109
Fetid odor or odor of rotten eggs
due to the presence of surface ex. Some varieties of limestone, barite, quartz

Mineralogy (9 decks)

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