Galena is a semiconductor with a small band gap of about 0.4 eV, which found use in early wireless communication systems. It was used as the crystal in crystal radio receivers, in which it was used as a point-contact diode capable of rectifying alternating current to …

Leading the list of the region's sights is the charming and historic little town of Galena, home to Civil War General and U.S. President Ulysses S. Grant. Dotting the green and gorgeous hills and dales, nearby villages are packed with sights, entertainment, and great travel opportunities.

Galena is a lead sulfide mineral with a chemical composition of PbS. It is the world's primary ore of lead and is mined from a large number of deposits in many countries. It is found in igneous and metamorphic rocks in medium- to low-temperature hydrothermal veins.

Things to Do in Galena, Illinois: See Tripadvisor's 62,347 traveler reviews and photos of Galena tourist attractions. Find what to do today, this weekend, or in May. We have reviews of the best places to see in Galena. Visit top-rated & must-see attractions.

Galena is the largest city in Jo Daviess County, Illinois, United States, and its county seat. [7] It had a population of 3,308 at the 2020 census. [6] A 581-acre (235 ha) section of the city is listed on the National Register of Historic Places as the Galena Historic District.

The City of Galena is nestled in the hills of Northwest Illinois and boasts beautiful architecture and year-round outdoor recreation. Come pay us a visit! 815-777-1050

Named by Pliny the Elder in 77-79 from the Greek "galene" meaning "lead ore". Galena Group. Galena is the primary ore mineral of lead.

Oct 24, 2024 · Galena mineral, also called lead glance, is a lead sulfide, a primary lead source, and an important silver source. This versatile mineral is used in manufacturing, radiation shielding, and more. This article will explore its properties, uses, and significance.

Sep 4, 2023 · Galena, a mineral of both historical and geological significance, is a lead sulfide mineral with the chemical formula PbS. It stands out with its distinctive metallic luster and cubic crystal structure, often appearing as shiny, cubic or octahedral crystals.

Galena, a gray lead sulfide (PbS), the chief ore mineral of lead. One of the most widely distributed sulfide minerals, it occurs in many different types of deposits, often in metalliferous veins, as at Broken Hill, Australia; Coeur d’Alene, Idaho, U.S.; Clausthal Zellerfeld, Ger.; and Cornwall,