Gypsum rocks can be found in many countries around the world. It's a relatively common mineral. Here are some examples:

North America:

* United States: Texas, Oklahoma, Iowa, New York, Michigan, and Nevada are major producers.

* Canada: Nova Scotia, New Brunswick, Manitoba, and Saskatchewan.

* Mexico: Chihuahua, Coahuila, and Nuevo Leon.

South America:

* Brazil: Pernambuco, Ceará, and Rio Grande do Norte.

* Argentina: Mendoza and San Luis.

* Chile: Atacama and Coquimbo.

Europe:

* France: Paris Basin.

* Germany: Lower Saxony.

* Spain: Catalonia and Castile-La Mancha.

* Italy: Sicily.

* United Kingdom: England (Yorkshire).

* Poland: Silesia.

* Russia: Volga region and Ural Mountains.

Asia:

* China: Xinjiang, Gansu, and Sichuan.

* India: Rajasthan and Gujarat.

* Iran: Isfahan and Yazd.

* Japan: Hokkaido and Honshu.

* Saudi Arabia: Al-Ahsa.

Africa:

* Egypt: Western Desert.

* Morocco: Western Sahara.

* South Africa: Northern Cape.

Australia:

* Western Australia: Pilbara region.

* New South Wales: Hunter Valley.

This is just a small sample of the many countries where gypsum can be found. The availability of gypsum resources can vary within a country, so further research is recommended for specific locations.