Context: Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite. The largest mass of elemental copper discovered weighed 420 tonnes and was found in 1857 on the Keweenaw Peninsula in Michigan, US. Native copper is a polycrystal, with the largest described single crystal measuring 4.4×3.2×3.2 cm.

Question: What is the concentration of copper in the earths crust.
Answer: 50 parts per million

Question: How large was the biggest find of copper?
Answer: 420 tonnes

Question: What year was the largest find of copper discovered?
Answer: 1857

Question: Where was the largest mass of copper found?
Answer: Michigan, US

Question: How big is the largest copper crystal that has been found?
Answer: 4.4×3.2×3.2 cm

Question: What is the concentration of copper in the earths atmosphere?
Answer: Unanswerable

Question: How large was the smallest find of copper?
Answer: Unanswerable

Question: What year was the smallest find of copper discovered?
Answer: Unanswerable

Question: Where was the smallest mass of copper found?
Answer: Unanswerable

Question: How big is the largest alien crystal that has been found?
Answer: Unanswerable