Lab 1: Mineral properties Flashcards
Habit
how the crystal naturaly grows
how the crystal naturaly grows
Habit
equant habit
shaped like a cube
shaped like a cube
Equant
Elongate habit
shaped like a rectangular prism
shaped like a rectangular prism
Enlongate habit
Acicular habit
extremely enlongated, like a needle
extremely enlongated, like a needle
Acicular habbit
Fibrous habbit
super long and wirey
super long and wirey
Fiberous Habbit
Platy habbit
wide flat crystals
wide flat crystals
Platy habbit
scaly/micacious habbit
flate and wide like paper
flate and wide like paper
scaly/micacious habbit
Bladed habbit
platy and enlongate
platy and enlongate
bladed habbit
radiating habbit
crystals strech out from a single point
crystals strech out from a single point
radiating habbit
Globular Habbit
forms a bunch of large rouned masses
forms a bunch of large rouned masses
Globular Habbit
Botryoidal Habbit
Forms grape sized spheres
Forms grape sized spheres
Botryoidal habbit
Colloform habit
Forms one round mass
Forms one round mass
Colloform Habbit
Oolitic habit
forms bb sized spheres
forms bb sized spheres
oolitic habit
Pisolitic habit
forms pea sized spheres
forms pea sized spheres
Pisolitic habbit
Drusty habbit
super tiny crystals
super tiny crystals
Drusty habbit
Massive Habit
doesn’t have an identifiable habit
doesn’t have an identifiable habit
Massive Habbit
Cleavage
how a mineral breaks, described as specific planes of weakness
how a mineral breaks, described as specific planes of weakness
cleavage
Fracture
When a mineral doesn’t have any cleavage planes, won’t always be the same as the shape of the crystals
When a mineral doesn’t have any cleavage planes, won’t always be the same as the shape of the crystals
Fracture
conchoidal fracture
a fracture with smooth curved surfaces
When a mineral doesn’t have any cleavage planes, won’t always be the same as the shape of the crystals
Conchoidal Fracture
Earthy fracture
reminicent fo freshly scooped soil
reminicent fo freshly scooped soil
Earthy Fracture
Hackly Fracture
breaks with jagged edges
breaks with jagged edges
Hackley fracture
splintery fracture
breaks into sharp, enlongated points
breaks into sharp, enlongated points
breaks into sharp, enlongated points
Uneven fracture
doesn’t match any other fracture pattern
breaks into sharp, enlongated points
Uneven fracture
hardness of fingernail
2~
2~
hardness of fingernail
hardness of a penny
3~
3~
hardness of a penny
4~
Hardness of a nail
Hardness of a nail
4.~
5~
Hardness of glass
Hardness of glass
5~
Hardness of streak plate
7~
7~
Hardness of streak plate
specific gravity
a measurment of the density of a mineral
a measurment of the density of a mineral
specific gravity
heft test
aproximating specific gravity by holding the mineral in your hand
aproximating specific gravity by holding the mineral in your hand
heft test
luster
the way a mineral interacts with light
the way a mineral interacts with light
Luster
Metalic luster
shines like a metal
shines like a metal
metalic luster
vitreous luster
Looks glassy
Looks glassy
Vitreous luster
Silky luster
has a soft reflective apearence
has a soft reflective apearence
Silky luster
dull/earthy luster
looks like a rock
looks like a rock
dull/earthy luster
Resonous luster
sort of like honey
sort of like honey
Resonous luster
waxy luster
has a waxy look
has a waxy look
waxy luster
greasy luster
shines and feels slick when touched
shines and feels slick when touched
Greasy luster
Diaphenaity
wether or not light passes through the mineral
shines and feels slick when touched
Diaphenaity
Opaque
light does not pass through
light does not pass through
Opaque
translucent
some light passes through
some light passes through
translucent
transparent
most light passes through
most light passes through
transparent
color when identifying minerals
usualy not a good idea, minerals can be different collors based on their contaminants.
usualy not a good idea, minerals can be different collors based on their contaminants.
collor when identifying minerals
streak
the mark left by a mineral when rubbed on a hard surface, more consistant than bulk collor
the mark left by a mineral when rubbed on a hard surface, more consistant than bulk collor
streak