Source? It is a clay mineral mainly composed of siliceous hydrochloric acid minerals and hydrated kaolin. In the past, there were two kinds of commodities: red stone grease and white stone grease.
? Origin and distribution? Location: Shanxi, Henan, Hubei, Jiangsu, Fujian, Shaanxi and other provinces.
Identification points? The identification points of red (white) stone grease: first, the whole body is pink (white) or red, and the color is marble-like pollen; The second is smooth and delicate, such as fat, licking the sticky tongue; Third, the water is ground into a milky shape, and it has no sand feeling when chewed.
However, the two kinds of adulterants are poor in water absorption, slightly sticky or non-sticky, and cannot be emulsified by water research, which can be distinguished.
Classic identification? 1 Shennong's Classic of Materia Medica: "Bluestone, red stone, yellow stone, white stone, black stone grease, etc., taste sweet and flat. Each with five colors, make up the five internal organs, and live in the valley. "2 beams? "A Record of Famous Doctors": "Five-colored stone fat is born in the Yangshan Valley of Nanshan. He also said, "bluestone fat gives birth to mountains and sea cliffs in Qiqu. Yellowstone is a fat-born KOBRESIA mountain, and its color is like a young warbler. Blackstone fat gives birth to Yingchuan Yangcheng. White stone fat gives birth to the yin of Mount Tai. Halloysitum rubrum is born in the shade of Jinan, Sheyang and Taishan. And take all the time. Tao Hongjing said, "Today, only red stone and white stone are used. Good people come from Wujun, and also from Wuling, Jianping and Yiyang. Yiyang people leave the alliance? The county boundary is 80 miles east, and it looks like a brain. Those who are red and lovely will come back to life with mining. The other three colors of stone grease are useless, but the black stone grease is used in painting. "4 Tang? Su Gong said, "Righteousness and harmony means Shenzhou, and what comes out is peach blossom stone, not stone fat. Baishizhi is out of the mountains of Cizhou today, better than the rest. Today, halloysitum is found in Lushi County, Zezhou Lingchuan County, Cizhou Luxiang County and Yizhou Mountains, and it is better to be fresh and greasy. Erzhi Taishan is unknown, and it was originally from Suchuan and Yuhang Mountain, but it is no longer collected today. "5 Song? Chen Cheng said, "I have seen Gongchi Baiershi grease in Suzhou today, but it is not very good as medicine. However, Yanzhou Mountain is the best, so take the best of two stones. 6 Su Song said, "White stone fat and red stone fat are only produced in Luzhou, which is similar to Cizhou. 7 kou zong said: "red and white stone grease are available in all directions, and those who are tired of sticking their tongues and embellishing their lips are the best." "8 Ming? "Herbal Medicine": "Halloysitum rubrum is prolific, and it is harvested all the time. There are five kinds of plants, and it is a real one. Although different tonics are different, they are always astringents. It's red and sticky, and it can only be used after being quenched with fire forging vinegar. " 9 Qing? "Materia Medica from the New" contains: "Halloysite. Delicate and sticky tongue is good. Red blood points, white people points. "
Quick identification? 1.Halloysitum rubrum: it is an irregular block with different sizes, all of which are pink, red or purplish red, and the shades alternate to form a marble-like pattern. It is fine and smooth as fat, and can be scraped with a knife to obtain very fine powder. Strong water absorption, sticky tongue. Use a mortar and add some water to grind it into a creamy shape. It has earthy flavor, light taste and no sense of sand when chewed.
2. White stone grease: similar in shape to red stone grease, but white with reddish or yellowish patches. Add some water to the mortar and grind it into light cream.