Leigongmo is a term used by ancient Chinese people to refer to meteorite glass. Because it often falls from rock layers washed away by rainwater during thunderstorms, the ancients mistakenly believed it was caused by lightning, thinking it was the ink left behind by the legendary Leigong (Thunder God) when he drew talismans. In Hainan Island, after a rainstorm, one often finds a peculiar black glassy stone about the size of an apricot and about ten centimeters long in the fields. Since it always appears after a thunderstorm, it is called 'Leigongmo'.

Tektite

The efficacy and function of Leigongmo

Central nervous system effects: The glycosides contained therein have sedative and tranquilizing effects on mice and rats, primarily due to their influence on the cholinergic system within the central nervous system.

The alcohol extract has no analgesic effect.

Effects on skin tissue: Plectranthus barbatus glycosides can treat skin ulcers, such as refractory wounds, cutaneous tuberculosis, leprosy, etc.

Intramuscular injection or subcutaneous implantation in mice, guinea pigs, and rabbits can promote skin growth, increase local white blood cell count, connective tissue coiling network proliferation, mucus secretion, and accelerate the growth of fur and tail.

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A cream formulation containing 25-1% alcohol extract (including rehmannic acid and rehmannoside), which also includes hydroalcoholic extracts from embryonic or young bovine, porcine, or ovine skin, liver, and brain, has shown good efficacy in treating dermatological conditions.

Antimicrobial effect: The water extract of young sprouts exhibits antimicrobial activity.

Leigonggenoside can treat leprosy. Some people believe that its function is to dissolve the bacterial wax membrane, which can then be eliminated by other drugs or the body's defense mechanisms.

Other effects: 'The alcohol extract can relax isolated ileum in rats.'.

The glycoside fraction can reduce the tension and contraction amplitude of isolated ileum in rabbits and rats, and can mildly inhibit the effect of acetylcholine.

In anesthetized dogs, intravenous injection can slightly stimulate breathing, slow down the heart rate, and moderately lower blood pressure, with the latter two effects not being blocked by atropine.

What is the use of Leigongmo

Leigongmo is the name given by ancient Chinese people to meteorite glass.

Regarding the efficacy of meteorites, Li Shizhen recorded in the 'Compendium of Materia Medica': 'It can calm the nerves, treat diseases of fright and evil spirits, and cure infantile convulsions, evil spirits, and other illnesses. When used as a pillow, it can dispel nightmares and bad omens.'.

Who has Leigongmo? Is this thing very fragile? It breaks easily when dropped

Hello! Leigongmo is a colloquial term used by the people of the Leiqiong region in Guangdong, China, for a locally occurring black vitreous rock that is distributed in a scattered manner. The earliest record of Leigongmo can be found in the book 'Xuanling Biaoluyi' written by Liu Xun of the Tang Dynasty in China. It states, 'After a sudden rain in Leizhou, people found a bearded stone in the wilderness, which is called Leigongmo.'.

In 1900, F.E. Sues named this glassy rock Tektite.

According to statistics, approximately 650,000 pieces of this glassy rock have been discovered worldwide, distributed across four regions within a 55° latitude range of the Earth's equator, namely the Australasian scattering area, the Ivory Coast scattering area, the Moldavian scattering area, and the North American scattering area. Leigongmo in China belongs to the Australasian scattering area. Different regions have their own regional names for this glassy rock, such as Australian stone, Philippine stone, Libyan desert glass, and so on.

In 1963, Li Daming of China confirmed that China's Leigongmo is equivalent to Tektite found in other parts of the world

Leigongmo is primarily distributed in the Leizhou Peninsula and Hainan Island. In Hainan Island, Leigongmo is predominantly concentrated in the areas of Qionghai, Wenchang, Qiongshan, and Chengmai, scattered across low-altitude terraces at an elevation of 30-40 meters. Due to rainwater erosion, it is exposed on the surface.

In the 1980s, leigongmo was also discovered in Guangxi, mainly distributed in Bobai, Hepu, Qinzhou, Chongzuo, Jingxi, Tiandong, Tianyang, Baise and other places. It is most abundant in Bobai County and the Baise Basin, where local people call it 'star feces'.

Leigongmo is typically jet black or pitch black, with the edges of the specimens being translucent brown due to their thinness. It exhibits a glassy luster and a conchoidal fracture, and is entirely vitreous. Even when magnified thousands of times under an electron microscope, it still displays amorphous properties and fracture characteristics. The individual sizes and weights vary, generally ranging from a few grams to tens of grams, with some reaching over 100 grams.

The characteristics of tektite meteorites are as follows: tektites are translucent glassy bodies with weak magnetism. They come in shades of dark green, green, light green, brown, tan, dark brown, and the rare vermilion color. Their specific gravity ranges from approximately 2.6 to 3.0. Tektites are formed under high altitudes, high temperatures, high pressures, and high speeds, which gives them distinct formation characteristics: high purity with no impurities inside, densely filled with small bubbles throughout, a fused crust on the outside with flow lines, and sometimes large gas prints on the outside and under the fused crust.

Due to its fragile nature, tektite glass easily shatters upon impact with the hard Earth's surface, making large pieces of tektite rare. In Hainan, a 500-gram tektite was discovered and sold for an astonishing 500,000 yuan. In 2003, a Paleolithic site was discovered in Baise, where archaeologists also found tektite meteorites. The tektite and stone tools were found in the same stratigraphic layer, and these tektite meteorites, dating back approximately 800,000 years, showed no signs of human processing. Therefore, it can be inferred that the age of the stone tools and meteorites is the same, which is 800,000 years ago. Tektite has been used as a dating tool in archaeological research.