Minerals Flashcards
building blocks of rocks
Minerals
Identify which property of minerals is being described
wavelengths of light reflected by the minerals
least reliable property when it comes to identifying minerals
Color
Identify which property of minerals is being described
how light is reflected from the mineral’s surface
Luster
Identify which property of minerals is being described
the shape of each crystal or an aggregate of crystals
Crystal Habit
also known as “crystal shape”
Identify which property of minerals is being described
the color of the mineral when it is powdered
a useful property when differentiating similar-looking minerals
Streak
Identify which property of minerals is being described
how resistant a mineral is to scratching
Hardness
the scale used in identifying the hardness of a mineral relative to other minerals
Mohs’ Hardness Scale
Identify which property of minerals is being described
the tendency of a mineral to break along preferred planes
these preferred planes are called “zones of weakness”
Cleavage
occurs if a mineral doesn’t break along zones of weakness
Fracture