Related Research Articles
Lapis lazuli, or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color. Originating from the Persian word for the gem, lāžward, lapis lazuli is a rock composed primarily of the minerals lazurite, pyrite and calcite. As early as the 7th millennium BC, lapis lazuli was mined in the Sar-i Sang mines, in Shortugai, and in other mines in Badakhshan province in modern northeast Afghanistan. Lapis lazuli artifacts, dated to 7570 BC, have been found at Bhirrana, which is the oldest site of Indus Valley civilisation. Lapis was highly valued by the Indus Valley Civilisation. Lapis beads have been found at Neolithic burials in Mehrgarh, the Caucasus, and as far away as Mauritania. It was used in the funeral mask of Tutankhamun.
Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its pure form (rare), it is typically a rose-red colour, but it can also be shades of pink to pale brown. It streaks white, and its Mohs hardness varies between 3.5 and 4.5. Its specific gravity is between 3.45 and 3.6. The crystal system of rhodochrosite is trigonal, with a structure and cleavage in the carbonate rhombohedral system. The carbonate ions (CO2−
3) are arranged in a triangular planar configuration, and the manganese ions (Mn2+) are surrounded by six oxygen ions in an octahedral arrangement. The MnO6 octahedra and CO3 triangles are linked together to form a three-dimensional structure. Crystal twinning is often present. It can be confused with the manganese silicate rhodonite, but is distinctly softer. Rhodochrosite is formed by the oxidation of manganese ore, and is found in South Africa, China, and the Americas. It is one of the national symbols of Argentina.
This article lists extreme locations on Earth that hold geographical records or are otherwise known for their geophysical or meteorological superlatives. All of these locations are Earth-wide extremes; extremes of individual continents or countries are not listed.
Cape Virgenes is the southeastern tip of continental Argentina in South America. The southern one, a little to the south-west, is Punta Dúngeness. Ferdinand Magellan reached it on 21 October 1520 during the Spanish expedition to East Asia and discovered a strait, now called the Strait of Magellan in his honor. As 21 October was the feast day of Saint Ursula and the Eleven Thousand Virgins, he named the cape in their honor.
Gold mining is the extraction of gold by mining.
AngloGold Ashanti Limited is an independent and global gold mining company with a diverse high-quality portfolio of cooperation, projects and exploration activities formed in 2004 by the merger of AngloGold and the Ashanti Goldfields Corporation. As of 2022, it was a global gold producer with 21 operations on four continents, listed on the New York, Johannesburg, Accra, London and Australian stock exchanges, as well as the Paris and Brussels bourses, but left the Johannesburg exchange in 2023. As of May 2023, it was the world’s fourth-largest gold miner with assets in Ghana, Australia, the US and Argentina.
Northeast Glacier is a steep, heavily crevassed glacier, 13 nautical miles long and 5 nautical miles wide at its mouth, which flows from McLeod Hill westward and then south-westwards into Marguerite Bay between the Debenham Islands and Roman Four Promontory, on the west coast of Graham Land, Antarctica.
Yamana Gold Inc. is a Canadian company that owns and operates gold, silver and copper mines in Canada, Chile, Brazil and Argentina. Headquartered in Toronto, the company was founded in 1994 and became listed on the Toronto Stock Exchange in 1995, the New York Stock Exchange in 2007, and the London Stock Exchange in 2020. The company became a gold producer after its 2003 re-restructuring in which Peter Marrone took over as chief executive officer and it merged with Brazilian company Santa Elina Mines Corporation. The combined company was able to use Yamana's access to capital with Santa Elina development properties to bring the Chapada mine into production. From there the company combined with other TSX-listed companies RNC Gold, Desert Sun Mining, Viceroy Exploration, Northern Orion Resources, Meridian Gold, Osisko Mining and Extorre Gold Mines which each contributed either a producing mine or a development project that was able to come into commercial production. The company was acquired by Pan American Silver in March 2023.
The Jáchal River is a river in the province of San Juan, Argentina. It is part of the Desaguadero River basin, and one of the most important permanent watercourses in the province, with an average flow of 9 cubic metres per second (320 cu ft/s). It is born from the confluence of the Río de la Palca and the Blanco River, in the northwest of San Juan.
Club Sportivo Independiente Rivadavia is a football club from Mendoza, Argentina. The team currently plays in Argentine Primera División, the first major league in Argentine Football league system.
Iglesia is a department of the province of San Juan, Argentina. It is located in the northwest mountainous corner of this province with substantial vegetation. Iglesia is one of the most visited departments in the province, particularly around Rodeo.
Passa Tempo is a municipality in the state of Minas Gerais in the Southeast region of Brazil.
Mina La Casualidad is an abandoned mine and ghost town in Salta Province in northwestern Argentina.
Wheaton Precious Metals Corp. is a Canadian multinational precious metals streaming company. It produces over 26 million ounces and sells over 29 million ounces of silver mined by other companies as a by-product of their main operations.
The El Indio Gold Belt is a mineral-rich region spanning the border between Chile and Argentina that contains large quantities of gold, silver and copper. On both sides of the border the belt is located within the Andes. The El Indio mine within the district was the first modern mine in Chile to produce gold as its main product. In Chile the main precious metal containing mineral is enargite. The El Indio belt is bordered in the north by another gold-silver mining district known as the Frontera District. Rodalquilarite, alunite and poughite are some of the minerals present in the area. The deposits of the belt formed during the Late Miocene period.
Pascua-Lama is an open pit mining project of gold, silver, copper and other minerals. Pascua Lama is located in the Andes mountains, in the southern reaches of Atacama Desert, straddling the border between Chile and the Argentina Northwest at an altitude of over 4,500 metres. Toronto-based Barrick Gold, the world's largest gold mining company, is developing the project. Due to its proximity to glaciers, Pascua-Lama has caused controversy and public protest in Chile, including demonstrations and petitions presented to the Chilean government. Chile has not approved the project.
The James N. and Mary F. Stavros Reservation is a 74-acre (30 ha) nature reserve located in Essex, Massachusetts. The property has been owned by The Trustees of Reservations since 1986. About 50 acres (20 ha) of the reservation consists of salt marsh.
The Veladero mine is a gold mine in Argentina. The mine is located in the north-western part of Argentina in San Juan Province. The mine has estimated reserves of 10 million oz of gold. It is operated by Barrick Gold.The mine uses heap leach to extract gold and silver, which is a process that uses cyanide to dissolve the gold and mercury to extract it from the cyanide slurry. This mine has had at least 5 catastrophic spills into the environment contaminating 5 rivers.
Olca-Paruma is a volcanic complex in Chile. Lying on the border between Chile and Bolivia, it is formed by an east–west alignment of volcanoes. From west to east, these are Cerro Paruma, Volcan Paruma, Olca, and Mencheca or Michincha. Aside from the mines of Ujina, Rosario, and Quebrada Blanca, the area is sparsely populated.
Coronel Felipe Varela is a department of the province of La Rioja (Argentina). Its chief town is Villa Unión.
References
- 1 2 3 "Gualcamayo". yamana.com. 2013. Archived from the original on 2013-06-22. Retrieved 2013-07-02.
29°43′23″S68°39′03″W / 29.7231°S 68.6508°W
 | This article about a place in San Juan Province, Argentina is a stub. You can help Wikipedia by expanding it. |
 | This article about a specific mine is a stub. You can help Wikipedia by expanding it. |