Что это такое
The main lead ore, and a principal carrier of silver — which is why most silver is a by-product.
Рудный минерал
Galena
The main lead ore, and a principal carrier of silver — which is why most silver is a by-product.
1945 homemade galena crystal radio ·
Badseed ·
CC BY-SA 3.0
· Wikimedia Commons
