The Emet mine is a large
boron
Boron is a chemical element; it has symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the boron group it has three ...
ore
mine located at
Kütahya Province
Kütahya Province () is a Provinces of Turkey, province in the Aegean Region, Aegean region of Turkey. Its area is 11,634 km2, and its population is 580,701 (2022). In 1990, Kütahya had a population of 578,000.
The neighboring provinces a ...
in western
Turkey
Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...
. Emet represents one of the largest
boron
Boron is a chemical element; it has symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the boron group it has three ...
reserves in
Turkey
Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...
having an estimated reserve of 1.68 billion tonnes of ore grading 28%
boron
Boron is a chemical element; it has symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the boron group it has three ...
.
Most of this comes in the form of
colemanite
Colemanite (Ca2B6O11·5H2O) or (CaB3O4(OH)3·H2O) is a borate mineral found in evaporite deposits of alkaline lacustrine environments. Colemanite is a secondary mineral that forms by alteration of borax and ulexite.
It was first described ...
.
The Emet mines together account for 40% of the world's known colemanite reserves.
The Emet mines consist of two
open-pit mine
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique that extracts rock or minerals from the earth.
Open-pit mines are used when deposits of commercially useful ore or ...
s at Espey and
Hisarcık. Together, they produce 1.5
megatonne
The tonne ( or ; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the shor ...
s of colemanite ore per year. About 240,000 tonnes per year of this production goes to the two
boric acid
Boric acid, more specifically orthoboric acid, is a compound of boron, oxygen, and hydrogen with formula . It may also be called hydrogen orthoborate, trihydroxidoboron or boracic acid. It is usually encountered as colorless crystals or a white ...
refineries on site at Emet.
Much of the rest is sent to
Bandırma
Bandırma ()Greek: Panormos(Πανορμος)is a municipality and district of Balıkesir Province, northwestern Turkey. Its area is 755 km2, and its population is 167,363 (2024). Bandırma is located in the south of the Marmara Sea, in the ...
, which is the main logistics hub for Turkey's boron industry.
The Emet mining operation is managed by the state-run company
Eti Maden
Eti Maden is a Turkish state-owned mining and chemicals company focusing on boron products. It holds a government monopoly on the mining of borate minerals in Turkey, which possesses 72% of the world's known deposits. In 2012, it held a 47% share ...
.
The Emet mining operation was established in 1958. The first boric acid refinery opened in 2005, and the second opened in 2011. Additionally, in 2015, a facility for producing specialized boric acid products was opened. Overall, the Emet mining and refining operation employs about 1,500 people.
References
Boron mines in Turkey
Kütahya Province
{{Turkey-stub