Pure calcite crystal it transparent, but generally defects make it a slightly translucent white color. Powdered calcite is white.
i don't know the minerals but its called luminescence
Pure calcite is transparent or slightly translucent, however less pure samples are milky white.
Acid will fizz when placed on a calcite mineral
Hydrochloric Acid- Calcite will fizz.
calcite has a regular arrangement of atoms.
i don't know the minerals but its called luminescence
Calcite displaying the property of fluorescence - when it absorbs ultraviolet light and emits visible light, such as red light.
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.
Calcite exhibits birefringence, meaning it can split light into two different directions. It also displays fluorescence under ultraviolet light, emitting different colors depending on impurities in the crystal. Additionally, calcite's hardness is relatively low, making it susceptible to scratching and cleavage.
Here is a short poem inspired by calcite: Calcite, crystal pure Gleaming in the light Nature's artistry so sure Shining bright, oh what a sight
cloaking device, they use calcite's birefringence to bend light around objects seen with the human eye.
Pure calcite is transparent or slightly translucent, however less pure samples are milky white.
Calcite is birefractive which means that its refractive index depends on the polarisation and direction of propagation of the light that reaches it. For more introductory information please see the wikipedia article about this substance.
Radioactivity
Light Red Dark Red Light Orange Dark Orange Light Yellow Dark Yellow Light Green Dark Green Light Blue Dark blue Light purple Dark Purple Light Pink Dark pink Light white Dark White Light Brown Dark Brown Black Light Grey Grey Violet Indigo blue
because in the dark ages their was light and dark. so the light was good and the dark was bad
light to dark