color streak and luster
Geologists identify minerals that are too small to be seen in a hand specimen using powerful microscopes. Minerals are classified according to their physical properties such as color, streak, cleavage, hardness and crystal form.
Because they have to get through the minerals and rocks in the earths crust.
The size of the individual particles that make up these rocks are very small.
Minerals can change color based on small impurities.
Mass
Subject or example Specimen can mean an example of something eg Submit a specimen of your hand writing to the court. or specimen can mean a small sample of something. eg The doctor asked for a urine specimen to be tested for infection.
specimen
A part, or small portion, of anything, or one of a number of things, intended to exhibit the kind and quality of the whole, or of what is not exhibited; a sample; as, a specimen of a man's handwriting; a specimen of painting; aspecimen of one's art.
Cover slip.
In 2007 there was a small eruption referred to by geologists as a "burp".
true
StreakColor of the mineral when it is powdered.Grind a small amount of a mineral into a powder on a porcelain streak plate and determine the color of the powder.