クォーツの主な産地は？

Quartz is a widely available mineral and is found in many parts of the world. Some of the major producers of quartz include:

ブラジル: Brazil is one of the largest producers of quartz, with deposits found in several states including Minas Gerais, Bahia, and Paraná.

中国: China is also a major producer of quartz, with deposits found in several provinces including Guangdong, Fujian, and Jiangsu.

アメリカ: The United States has several significant sources of quartz, including Arkansas, California, and North Carolina.

ロシア: Russia is a major producer of quartz, with deposits found in several regions including the Ural Mountains and Siberia.

インド: India is also a significant producer of quartz, with deposits found in several states including Rajasthan, Andhra Pradesh, and Telangana.

マダガスカル: Madagascar is known for producing high-quality quartz crystals, particularly in the region around Antananarivo.

Other countries with significant quartz deposits include Canada, オーストラリア, 南アフリカ, スペイン, and France.