Korea’s nonmetallic minerals include magnesite, graphite, mica, fluorite, talc, barite, asbestos, silica sand, quartz and zeolite.
Its magnesite deposits are known worldwide for their high grade and abundance. They are buried mainly in Ryongyang and Taehung (South Hamgyong Province) and Paegam (Ryanggang Province). Graphite deposits are divided mainly into amorphous graphite and flaky graphite, which occur mostly in Janggang, Jagang Province; Kim Chaek, North Hamgyong Province; and Kaechon, South Phyongan Province.
Korea also has limestone, iron sulphide, apatite, potassium feldspar, holtonite and other minerals for use in chemical industry and agriculture.
Limestone is widely distributed across the country, especially in Pyongyang, and South Phyongan, North Hwanghae, South Hwanghae, South Hamgyong and Kangwon provinces.
Apatite is mostly found in Phyongwon, Jungsan and Songchon in South Phyongan Province; Songhwa in South Hwanghae Province; Tanchon in South Hamgyong Province; and Kim Chaek in North Hamgyong Province. Potassium feldspar occurs mainly in Chongdan, South Hwanghae Province. Used as a raw material for boron production for several sectors of industry and agriculture, holtonite was named so, because it is indigenous to the Holtong area.
The country abounds in phlogopite, biotite, muscovite, lepidolite and other mica deposits, which are found mostly in Kilju, North Hamgyong Province; Tanchon, South Hamgyong Province; Pakchon, North Phyongan Province; Suan and Holtong, North Hwanghae Province; and Jechon and Tanyang, North Chungchong Province.
The country is rich in high-grade kaolin, which is found mainly in Kyongsong, North Hamgyong Province, and Anbyon, Kangwon Province.
It has an abundance of stone resources.
Granite is widely distributed, especially in Ryonggang, South Phyongan Province, and Haeju, South Hwanghae Province. Marble comes in beautiful colours and patterns, found mostly in Kim Chaek, North Hamgyong Province, and Phyongsan, North Hwanghae Province.
The country also boasts rich deposits of serpentine, particularly in Tanchon, South Hamgyong Province; Paegam, Ryanggang Province; and Chongjin, North Hamgyong Province.
Kumipho and Monggumpho in South Hwanghae Province are rich in silica sand that is massively used as raw materials for glass industry and in the steel-casting and iron-melting processes of machine-building industry.