Critical Minerals Factbook
Facility

Umicore Quapaw germanium materials plant

Umicore's current site directory identifies Quapaw operations in germanium recycling, germanium tetrachloride purification, zone refining, crystal growth and infrared optical solutions.

Facts on this page last re-verified Aug 18, 2026 — the oldest verification date among its current claims. How we verify.

Location: Quapaw, Oklahoma, United States

Recycling

Germanium recycling line

Operating

Recovery and purification of germanium-bearing recyclable material

Material flow

Germanium-Bearing Scrap → Refined Germanium Metal

Capacity

No capacity claim. Absence of a figure means no source publishes one.

Qualification

No qualification claim. Status does not imply qualified output.

High purity refining

Germanium zone-refining line

Operating

Zone refining of germanium metal

Material flow

Germanium Leach Concentrate → Refined Germanium Metal

Capacity

No capacity claim. Absence of a figure means no source publishes one.

Qualification

No qualification claim. Status does not imply qualified output.

Compound chemicals

Germanium tetrachloride line

Operating

High-purity germanium tetrachloride purification for optical applications

Material flow

Refined Germanium Metal → Germanium Tetrachloride

Capacity

No capacity claim. Absence of a figure means no source publishes one.

Qualification

No qualification claim. Status does not imply qualified output.

Crystal substrate

Germanium crystal and optical-material line

Operating

Germanium crystal growth and infrared optical-material production

Material flow

Refined Germanium Metal → Germanium Bulk Crystal, Germanium Optical Blank

Capacity

No capacity claim. Absence of a figure means no source publishes one.

Qualification

No qualification claim. Status does not imply qualified output.

Sources