When you process raw materials you will sometimes end up with "leftovers." These leftovers come in the form of powders. There are four types of powder:

Physical Attack Powder

Physical Defense Powder

Magical Attack Powder

Magical Defense Powder

• Processing stones will give you Physical Attack Powder and Physical Defense Powder.
• Processing energy will give you Magical Attack Powder and Magical Defense Powder.
• Processing herbs will give you Physical Defense Powder and Magical Defense Powder.

If you don't have any processing skills and let the Master of Processing Materials do your processing instead, he will give you back the leftover powders he receives while processing, along with your successfully processed materials.

These powders have the same names as the special Merac Castle Siege powders that are used for making Castle Siege accessories, but their icons and descriptions are different. Be careful not to get them confused!

The powders that are left over from processing attempts may be used to create minerals. Minerals are things you may use to temporarily increase your attack and defense stats. There are four different types of minerals and fourteen different levels of each type. The higher the level, the better a stat boost you'll get from the mineral.

To create minerals, you must buy a Power Box from the general merchant NPC. In Randol, that NPC is Merchant Geres. The box will require you to mix a powder, an accessory, and a smelting stone.The box's instructions call the smelt a "refining stone," but that's actually a totally different item.

The powder type will determine what mineral type you get, the level of the smelting stone relates to the level of mineral you get, and so far the accessory type used seems to have no effect on the resulting mineral.

Mineral level	Smelting stone level		Mineral level	Temporary stat boost given
				Physical Attack	Physical Defense	Magical Attack	Magical Defense
1	1, 5		1	15	60	15	18
2	6, 7, 9, 10		2	25	100	25	30
3	11, 12, 13, 15		3	35	140	35	42
4	16, 17, 20		4	45	180	45	54
5	21, 22, 25		5	55	220	55	66
6	26, 27, 29, 30		6	65	260	65	78
7	31, 32, 33, 35		7	75	300	75	90
8	36, 37, 40		8	85	340	85	102
9	41, 42, 45		9	95	380	95	114
10	46, 47, 49, 50		10	105	420	105	126
11	51, 52, 53, 55		11	115	460	115	138
12	56, 57, 60, 61, 62, 65, 71, 72, 85		12	125	500	125	150
13	?		13	135	540	135	162
14	?		14	145	580	145	174

The above numbers shown in grey are projected values. They will be checked when possible. The pattern appears to be that for powders level 11 and lower, a level x power will come from smelting stones in the level range: 5*( x - 1 ) to 5*x . And a level 12 power will come from smelting stones level 56 and higher.

Please thank HUNMagnum, StormFireIce, and Vindalanda for their help with this page!