Columbite-(Fe) - Petaca Mining District, New Mexico, USA (Analyzed)

Columbite-(Fe) from Petaca represents an iron-dominant member of the columbite group, with the general formula (Fe,Mn)(Nb,Ta)₂O₆. These specimens typically occur as black, striated prismatic crystals or massive aggregates within granitic pegmatites. The species is an important ore of niobium and is frequently associated with other Nb-Ta minerals in highly fractionated pegmatitic environments.

Petaca is a classic American locality for columbite-group minerals, and material from this district carries both historical and mineralogical value. With its high specific gravity, well-defined crystal habit (when present), and significance within pegmatite geochemistry, Columbite-(Fe) from this locality makes a strong addition to systematic and economic mineral collections alike.

This specimen comes with an XRF report from the original collector.

Specimen Details:

Approx. specimen size: 50mm x 30mm x 18mm

Approx. specimen weight: 63.45 grams

Approx. specimen activity on an SE International Ranger EXP: 2200 CPM

Radioactive Mineral Shipping Policy

All naturally radioactive mineral specimens are available for shipping within Canada only. Due to Transport Canada dangerous goods regulations and Canadian Nuclear Safety Commission requirements, we cannot ship radioactive materials internationally. All specimens are packaged in accordance with excepted quantity guidelines and clearly labeled. Purchasers are responsible for ensuring they are legally permitted to possess radioactive mineral specimens under applicable provincial and federal regulations. If you have questions about a specific specimen's activity level or shipping eligibility, please contact us before purchasing.