Calcite bends light in a certain way: Double refraction (Double image)
The easiest way to determine a calcite is with the acid test. dilute HCl makes calcite effervesce. (bubble)
It fizzes when put in acid.
There are more than four but i only have 5 -Magnetism -Optical properties -Fluorescence -Reaction to acids -Radioactivity
pure calcite has good cleavage, is asomewhat soft mineral, has a milky white color, it breaks light up into slow and fast beams giving the illusion of double image of whatever you are looking at on the other side, and the easiest way to tell if your dealing with calcite is to put some HCl acid on it and it will bubble noticeably
Those would be properties like magnetism, fluorescence, triboluminescence.
No, calcite is not magnetic.
buttts
Stuff
the shape and color and quartz is glassy and calcite isn't.
hardness
The two unusual properties of calcite are: 1. Calcite fluoresces (floor-esses), that is, it glows, when ultraviolet light is shone upon it. 2. Calcite is birefringent (bye-ree-fringe-unt), which means that it bends light that hits it not once, but twice. So if you were to look through a flat, clear sheet of calcite, you would see everything double.
The minerals aragonite and calcite has the same formula - CaCO3 (calcium carbonate). But all the physical properties are different.
you use the scratch test
There are more than four but i only have 5 -Magnetism -Optical properties -Fluorescence -Reaction to acids -Radioactivity
Special properties are unusual properties a mineral may have that most minerals don't.
Hardness and Streak
The definition of special properties are the unique features of a substance. They are commonly derived from other intrinsic and extrinsic properties.
Some of the sulfur special properties are odorless, tasteless and its color
double reflection