What is Lustre?
The way the mineral reflects the light.
What words are used to describe Lustre?
Terms used to describe Lustre are adamantine;
Vitreous, metallic, silky, pearly, dull, waxy, earthy
Describe three degrees of transparency
Transparent - Allows all light to pass through
Translucent - Allows some light to pass through
Opaque - Allows no light to pass through
Describe form
Form refers to the number and arrangement of crystal faves produced by a mineral. One mineral may show more than one form. Some minerals do not display form, but occur as amorphous or structureless masses.
Describe Habit
Habit refers to the appearance of single crystals or crystalline masses that do not show perfect crystal shapes.
Give 2 examples of Mineral Habits
Any two from;
Prismatic, Acicular, Botryoidal, Dendritic, Mammilated, Massive, Lamellar/Foliated, Tabular
