Question

What is the other name of Galena?
(A) Iron
(B) Coal
(C) Lead
(D) Mica

Answer 1

Hint: Galena is one of the most plentiful and broadly dispersed sulfide minerals. It solidifies in the cubic gem framework frequently indicating octahedral structures. It is frequently connected with the mineral’s sphalerite, calcite, and fluorite.

Complete Answer:
- Galena is the principle metal of lead, utilized since old occasions. In light of its fairly low softening point, it was anything but difficult to free by purifying. It commonly shapes in low-temperature sedimentary stores.
- In certain stores, the galena contains around 1–2% silver, a side-effect that far exceeds the principle lead metal in income. In these stores, critical measures of silver happen as included silver sulfide mineral stages or as restricted silver in strong arrangement inside the galena structure. These argentiferous galenas have for some time been a significant mineral of silver.
- Galena stores are discovered worldwide in different conditions. Noted stores incorporate those at Freiberg in Saxony; Cornwall, the Mendips in Somerset, Derbyshire, and Cumberland in England; the Madan and Rhodope Mountains in Bulgaria; the Sullivan Mine of British Columbia; Broken Hill and Mount Isa in Australia; and the antiquated mines of Sardinia. In the United States, it happens most outstandingly in the Mississippi Valley-type stores of the Lead Belt in southeastern Missouri, which is the biggest known store, and in the Driftless Area of Illinois, Iowa, and Wisconsin.
- Galena is a semiconductor with a little band gap of about 0.4 eV, which was discovered in early remote correspondence frameworks. It was utilized as the gem in precious stone radio beneficiaries, in which it was utilized as a point-contact diode fit for correcting substituting current to identify the radio signs. The galena precious stone was utilized with a sharp wire, known as a "feline's bristle" in contact with it.

Note: Galena, likewise called lead look, is the normal mineral type of lead (II) sulfide (PbS). It is the main metal of lead and a significant wellspring of silver.