Background: Starting in 2019, the project "To compile and publish 108 volumes of traditional medicine, to protect the heritage of the ancient medical sources, and to open up its commercial opportunities for use" has been implemented.
As a result of this project, 50 volumes of books were published, including books created by Mongolian ancient doctors and maarambas, translated medical books from Chinese, Manchu, and Tibetan, as well as some books written by traditional medicine researchers and scientists between 1990-2020, have been published and made available to the public. During the creation of 108 volumes of traditional medicine, dozens of ancient medical scriptures were newly discovered. Among them, we have found medicinal books written by Indian and Tibetan scholars and monks from the 8th and 13th centuries. One of them is The Third Karmapa, Rangjung Dorje's sutra, "The Ocean of Medicinal Names." Therefore, it is imperative that we first study the biography and works of The Third Karmapa, Rangjung Dorje. Purpose: Clarifying the biography and works of The Third Karmapa, Rangjung Dorje, the author of the book "The Ocean of Medicinal Names". Research methods: Research of source documents (ancient sources), hermeneulic approach, analysis, and synthesis methods were used. Conclusion
1. The Third Karmapa, Rangjung Dorje, who lived between 1284 and 1339, was a prominent Tibetan religious and cultural figure, a famous author of many books who contributed to strengthening the foreign relations between Mongolia and Tibet and increasing the influence of the Garmaa Gaajud tradition in Yuan Dynasty.
2. Although Karmapa. Rangjung Dorje lived at the end of the 13th century and the first half of the 14th century, he was a well-known, active and creative monk. Therefore, his image has been left in many paintings and cast as God's image. In particular, he wrote an interesting book about medicinal raw materials called "The Ocean of Medicinal Names," which has only a few pages but briefly contains the names and potencies of 768 medicinal raw materials.

In traditional Mongolian Medicine, materials derived from plants, animals, trees, and minerals are processed by traditional technology to improve their effectiveness and safety. One of mineral-based materials is calcite which is widely used in traditional medicine. Mineral contents of calcite: After processing by traditional technology (taming) with enrichment, calcite turns to bright yellow, small soft microcrystals with bitter taste and smell of milk. Moreover it obtains solubility in water. Various macro- and microelements were determined in tamed calcite including Na, Mg, K, Ca, S, Mn, and Fe. Ca takes the major part (64%) of the elements. Crystal size determined by NANOPHOX (PCCS), GmbH, Sympatec apparatus were 115 nm and 124 nm depending on the traditional technology of processing. Crystal structure of calcite in phase shifts was analyzed after burning it in +300º C, +500 º C, +800 º C, +1200 º C, and +1400 º C by using Shimadzu XRD-7000 X-ray diffractometer, HA- 1001, and TTK-450 apparatus. CaCO3 content (84.23%) was higher at +300º C and +500 º C, while CaC2 content (15.77%) was higher at +800 º C, +1200 º C, and +1400 ºC. Effects of calcite on acetic acid-induced gastric ulcer: Gastric ulcer induced by acetic acid in rats was healed completely by tamed calcite within 21 days. Calcite improves bone repair of experimental fracture in rats by increasing Ca and alkaline phosphatase activities. Effects of calcite containing drug Jonsh-5 on experimental femur fracture in rabbits: Jonsh-5 is composed of 5 components including calcite, Cardius crispus, Forsythia suspense, Terminalia Chebula, and Inula helenium. Jonsh-5 increased serum level of alkaline phosphatase after 7 days of fracture. X- ray images showed that healing process of the bone was significantly increased by Jonsh-5 compare to control and Calcium D3-Nycomed treatment. These results were also proved by histological analysis suggesting that Jonsh-5 may promote bone healing in rat model of fracture. Safety of calcite containing drugs: Contents of macro- and microelements, moisture, and substances extractable in water have been determined. Mineral and organic impurities have also been evaluated in Jonsh-5. Bacterial impurity of the drug is within the standard range. Moreover contents of heavy metals such as lead, cadmium, and mercury meat the WHO permeated levels of toxic metals.