Allchar deposit

The Allchar deposit (alternative spellings Alsar deposit, Alšar deposit or Alshar deposit) is a low-temperature hydrothermalgold–arsenic–antimony–thalliumdeposit in Kavadarci Municipality of North Macedonia. For some time, the thallium-rich part of the deposit was mined. The Crven Dol mine yielded thallium and the ore body still holds an estimated 500 t of the metal. The mineral lorándite from this ore deposit can be used to determine the solar neutrino flux.

"Mineral collecting at Allchar is only allowed with permission from the University of Skopje. The area will be declared a protected site. In about 2010, several collectors without this permit were arrested by police."