The Khoy sheet (1:100000) is located in the Khoy Quadrangle at northwest of Iran. Dominant rocks in the region include ophiolitic and sedimentary rocks. Sedimentary rocks mainly exposed at northeast of the sheet. Ophiolites and colored mélanges have great extent in the sheet. Oorin Mountains with a pick of 3633m is located at southwest of the region.
Economic geology of the sheet was studied in two steps. The first prospection effort was conducted at whole of the region. All mineral indications and deposits were visited. In addition, through field survey in the sheet, several new points were identified that include:
- Chromite at ophiolitic rocks within dunite, harzburgite and serpentinite.
- Magnesite as scattered occurrences within ophiolitic complex.
- Manganese associated with radiolarite sequence.
- Copper mineralization has occurred in the ophiolitic rocks as well as metamorphic rocks. Iron, radiolarite and manganese occurrences are also present in metamorphic rocks.
- There is talk occurrence in the talk schists and serpantinites.
Generally, the mineral indications include:
- Qeshlaq chromite
- Ravand chromite
- East Qurqan chromite
- North of Kolvanas copper indication
- Meydan-bala copper indication
- Mamash Khan copper indication
- Anbar-e Paien iron indication
- Aq Bolaq-e Paien manganese indication
- Shegefti magnesite indication
- Goldur magnesite indication
- Qeshlaq granite
- Qezelje granite
- Kheder silica