Dust

Dust is a source of energy in Remnant. The physical properties of Dust make it incredibly useful for a variety of purposes, particularly in the weapons. It is known to make a distinctive "shimmering" sound passively and when in use.

The name "Dust" is implied to be a reference to the primordial state which mankind was born from. As a natural resource, it is sometimes poetically referred to as "Nature's Wrath", or more prosaically as an energy propellant.

History
According to ancient legends, mankind was fighting a losing struggle against creatures of darkness known as the Grimm. However, through their resourcefulness and ingenuity, Humanity managed to discover and harness a source of power they named "Dust" in order to battle the Grimm. The advent of Dust became the turning point in the war. It would appear that after mankind drove back the Grimm and built civilizations, Dust became integrated into everyday life within Remnant. Only a few selected people know the origin of Dust which is the remnant dust of humanity's first wave. In other words, when the God of Darkness turned every human into dust, it mixed with residual energy of the Gods after their depart and got refined into the ground until become the crystals of Dust. The type of Dust depends on the magic of the user's dust, for example if it was someone who dominated fire magic, then it would create a fire Dust.

Description
As an energy source, Dust can be triggered by the aura of Humans, Faunus, Lycans and Vampires. Dust can be found in three distinct states, crystalline, powdered and liquid. Dust, whether crystalline or powdered, is highly explosive though the powdered form appears more volatile since something as innocuous as a sneeze is enough to detonate a cloud of Dust. Meanwhile liquid dust isnt volatile but is toxic.Dust does not function outside of the atmosphere of Remnant since its power depends on Remnant's Core, precluding the possibility of space flight. Though that changed when the scientific Allan Crystal created an artificial type of Dust, "Lunar Gravity" which takes energy from both Remnant and the moon but this dust only works for flights between both places.

Types of Dust
There are the main element Dusts that can be combined to form other types or can also found already combined on the nature. Besides some scientists were able to create artificial types.
 * Fire: A crystal of Dust capable of creating and manipulating fire, it was refined from the dust of humans who dominated fire magic. It is of a red color.
 * Water: A crystal of Dust capable of creating and manipulating water, it was refined from the dust of humans who dominated water magic. It is of a blue color.
 * Air: A crystal of Dust capable of creating and manipulating wind, it was refined from the dust of humans who dominated air magic. It is of a green color.
 * Earth: A crystal of Dust capable of creating rocks and manipulating the earth, it was refined from the dust of humans who dominated earth magic. It is of a brown color.
 * Heat: A crystal of Dust capable of generating heat, it was refined from the dust of humans who dominated passive fire magic. It is of an orange color.
 * Combustion: A crystal of Dust capable of creating explosions, it was refined from the dust of humans who dominated colossal fire magic. It is of a dark red color.
 * Electricity: A crystal of Dust capable of creating and manipulating lightnings, it was refined from the dust of humans who dominated electric magic. It is of a yellow color.
 * Gravity: A crystal of Dust capable of manipulating gravity to a certain point, it was refined from the dust of humans who dominated all kinds of magic. It is of a black color.
 * Hard-Light: A crystal of Dust capable of creating light barriers, it was refined from the dust of humans who dominated colossal light magic. It is of a dark blue color.
 * Ice: A crystal of Dust capable of creating ice, it was refined from the dust of humans who dominated water and air (cold) magic. It is of a cyan color.
 * Cold: A crystal of Dust capable of generating cold by expelling heat, it was refined from the dust of humans who dominated passive air magic. It is of a dark green color.
 * Plant: A crystal of Dust capable of manipulating plants, it was refined from the dust of humans who dominated water, earth and passive fire magic. It is of a purple color.
 * Instincts: A crystal of Dust capable of increasing the strength and speed of the user, it was refined from the dust of humans who got an animal link. It is of a dark purple color.
 * Steam: A crystal of Dust capable of creating steam, it was refined from the dust of humans who dominated passive water magic.
 * Gas: A crystal of Dust capable of creating inflamable gas, it was synthesized artificially by Nathaniel Vytal, he used earth dust forged at a temperature of 5000 celsious degrees as compacted as it can be by using gravity dust. It is of a beige color.
 * Lunar: A crystal of Dust capable of increasing the base power of everything, it was refined from the dust of moon pieces that impacted Remnant after the God of Darkness broke it partially. It is of a shining white color.
 * Lunar-Gravity: A crystal of Dust capable of manipulating gravity to a certain point, it was synthesized artificially by Allan Crystal, he used gravity and lunar dust so the gravity dust would take energy from both Remnant and the moon to allow him to send things into space. It is of a shining gray color.
 * Copy: A crystal of Dust capable of creating any other kind of Dust crystals, it was refined uniquely from the residual energy of the God of Creation. This is considered a Pseudo-Relic. It is transparent.
 * Clone: A crystal of Dust capable of creating a temporal evil clone of a person, it was refined uniquely from the residual energy of the God of Destruction. This is considered a Pseudo-Relic. It is of a vantablack color.
 * Time-Space: A crystal of Dust capable of travelling between dimensions, it was refined uniquely from the residual energy of the God of Creation and Destruction. This is considered a Pseudo-Relic. It is of a transparent black color.
 * Neutro: A crystal of Dust with no ability, it was refined from the dust of humans who barely dominated magic or didnt at all, it isnt volatile and can provide energy so its easy in mostly all homes and technology. It is of a white color.

Production and Distribution
The largest producers of Dust in the world are Schnee Dust Company, Crystal Corp, Power Dust and Sapphire Dust. Dust is mined from the Quarries, purified, and transported by railway lines or by sea to distributors. Dust is then sold to the public by Dust shops such as From Dust Till Dawn.

Crystalline Dust is apparently safe enough to leave out on display openly, whereas powdered Dust is dispensed from tubes on the wall and stored in portable cylindrical canisters, meanwhile liquid dust is only accessed by the army.

Much like real-world resources, Dust has been said to be a limited resource as it is mined from the ground. It's known tehre is a crystal-to-bullet process, with a hint that this process is costly. Dust is supposed to return to an energy form once it has been consumed and absorbed by the earth to be refined again by the core of Remnant but this process would take  many centuries.