Properties Of Mineral Flashcards
The color of mineral in powdered form
Streak
Resistance of mineral to be scratched
Hardness
Scale that uses ser of indenting tools or points composed of common mineral objects.
Moh scale of hardness
an absolute scale of hardness scale of indentation hardness related to the RATIO BETWEEN THE FORCE AND TIME
Knoop scale of hardness
Refers to the common or characteristic shape of a crystal or aggregate of crystal
Habit
Type of habit that is fine, slender and needle like crystal
Acicular
Type of habit that exhibit narrow bands of different colors as texture
Banded
Type of habit that forming a very thin hair
Capillary
Type of habit that long and thin columns which resembles to wire
Filiform
Type of habit that cavity line with small crystal
Geode
Type of habit that forming a small spherical
Globular
Ability to reflect light
Luster
Caused by absorption or lack of absorption of various wavelengths
Colors
Classification of colors that not influenced by certain impurities
Idiochromatic
Classification of colors that are influenced by impurities
Allochromatic
Classification of colors that the atoms are trapped or has been included whithin the crystal lattice
Chromophores
Ability of the light to pass through
DIAPHANEITY
Classification of diaphaneity that the ratio of light in air and velocity of light in a medium
Refractive index
Classification of diaphaneity that light oass through them and moves in all direction
Isotropic minerals
Classification of diaphaneity that do not have an isotropic crystal system
Anisotropic minerals
Classification of diaphaneity that can produce a double image in an object behinf
Double refraction
Type of diaphaneity that light passses through and producing a clear image
Transparent
Type of diaphaneity that light does jot completely pass through and producing a blurred image
Semi transparent
Type of diaphaneity that no image can be seen but light can only seen through the edges of the mineral
Translucent
Type of diaphaneity that no light can pass through
Opaque
Planes of weak bonds within the crystal lattice
Cleavage
6 cleavage, 12 faces
Dodecahedral
4 Cleavage and 8 faces
Octahedral
3 cleavage and 6 faces at right angle
Cubic
3 cleavage and 6 faces but not in right angle
Rhombohedral
2 clevage and 4 faces
Prismatic
1 cleavage and 2 faces
Basal
The appearance of the mineral when it does not break along the cleavage plane
Fracture
Type of fracture that the surface has a rounded protuberance accompanied by circular grooves
Conchoidal
Type of fracture that the surface has no protuberance
Even
Type of fracture that the surface has a certain larger parts resembling to fibers
Fibrous
Type of fracture that the surface is jagged and with sharp edges
Hackly
Type of fracture that the surface is entirely interrupted by angular large and small protuberance
Uneven
Intergrowth of two or more crystal from the same point
Twinning
Ability ti seperate without any cleavage to slip or seperate
Parting
1 hydrogen proton
Protium
Hydrogen that has 1 proton and neutron
Deuterium
Hydrogen that has 1 proton and 2 neutron
Tritium
Example of coupled ionic substitution
Plagioclase feldspar (Na,Ca)(Si,Al) Si2O8
Example of limited ionic substitution
Calcite and magnesite
Appearance of different colors when a crystal is viewed in transmitted light in different directions.
Pleochroism
Some minerals will emit visible light when
heated below red heat.
Themoluminesence
Shows a series of colors due to light undergoing reflective interferences with itself either on the surface in the interior.
Iridescene
Pearly reflection from the interior of a mineral, like the effect of a glass of water to which a few drops of mil have been added.
Opalescene
Minerals with an isometric crystal system that
have
light pass through them and moves in all directions with equal velocity, hence, a single refractive index.
Isotropic minerals
Minerals that do not have an isometric crystal system with light passing through them and have varying velocities of light moving in different directions and orientations, hence, more than one refractive index.
Anisotropic minerals
Minerals that are strongly attracted to magnets,
Ferromagnetic
Minerals that tend to create its own magnetic field
Ferromagnetic
Minerals that have have a net magnetic moment equal to zero.
Anti ferromagnetic
Two direction have two distinct colors
Dichroism
