Wu Ming Yi (Spherical, with nodular protrusions)
【Name】
【Source】
Song Kaibao (Era)
【Frequency of Use】
F
【Origin】
It is a class of minerals containing manganese and iron.
【Appearance】
It is irregular spherical, uneven or has nodular protrusions, a few are smooth, and the sizes vary. Generally, the diameter is about 7~30㎜, and the small ones are only 1~3㎜ in diameter. The appearance is brown, black-brown or gray-brown; often covered with yellowish-brown powder, mostly without luster; the body is relatively light, the texture is relatively soft, and some are as hard as stone. The cross-section is purple-brown. When touched by hand, it can be dyed brownish-yellow and has a slightly greasy feeling.
【Identification】
《Puji Fang》: “To identify Wu Ming Yi, grind a shallow mouth, pour water until it is full, and the real one will not overflow.” 《Liang Lie Jian Bie》: “The best ones are those with luster, dark brown color and round shape; those that are shaped like millet grains or small objects like sand are useless.” It is best to have large, uniform pieces, without stones, without impurities, black-brown in color, and with luster.
【Category】
Mineral Category