Cobalt Ore

cobalt Ore is the lowest grade Hardmode ore, spawned on the first breaking of an altar. More will be spawned on the 4th, 7th, 10th, etc destructions, although in decreasing amounts.

Palladium Ore may replace his ore. It is also slightly stronger.



Trivia

 * Actual Cobalt is a poisonous, magnetic metal (though it is actually a key part of vitamin B12, which is necessary for living beings and has extremely low toxicity).
 * Cobalt is named after the Kobold, at that time thought of as a mischievous spirit.
 * Pure cobalt is an element found on the periodic table just after iron, and is actually silver-like in color. However, cobalt is never found pure in nature. Its historic primary use was as a pigment used especially in glass or porcelain, as it turns a rich "cobalt blue" when in the compound form of Smaltite, made of cobalt, iron, and nickel combined with Arsenic. This made cobalt, along with lapis lazuli, one of the few mineral blue pigments, and therefore was historically an extremely valuable commodity.
 * Several Cobalt items in the game are Japanese-themed, namely the Cobalt Naginata, Cobalt Armor and the Cobalt Sword which resembles a katana.
 * Cobalt's inventory sprite is copied by Adamantite Ore, except rotated and red.

History
코발트 광석 Minerai de Cobalt