Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native) form, as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides).
Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gold is insoluble in nitric acid, which dissolves silver and base metals, a property long used to refine gold and confirm the presence of gold in metallic substances, giving rise to the term acid test. Gold also dissolves in alkaline solutions of cyanide, which are used in mining and electroplating. Gold dissolves in mercury, forming amalgam alloys, and as the gold acts simply as a solute, this is not a chemical reaction.
A relatively rare element, gold is a precious metal that has been used for coinage, jewelry, and other arts throughout recorded history. In the past, a gold standard was often implemented as a monetary policy. Still, gold coins ceased to be minted as a circulating currency in the 1930s, and the world gold standard was abandoned for a fiat currency system after 1971.
As of 2017, the world's largest gold producer by far was China, with 440 tonnes per year. A total of around 201,296 tonnes of gold exists above ground, as of 2020. This is equal to a cube with each side measuring roughly 21.7 meters (71 ft). The world consumption of new gold produced is about 50% in jewelry, 40% in investments and 10% in industry. Gold's high malleability, ductility, resistance to corrosion and most other chemical reactions, and conductivity of electricity have led to its continued use in corrosion-resistant electrical connectors in all types of computerized devices (its chief industrial use). Gold is also used in infrared shielding, colored-glass production, gold leafing, and tooth restoration. Certain gold salts are still used as anti-inflammatories in medicine.
GGML Internship Programme
Geita Gold Mining Ltd (GGML) has been a strong supporter to the government initiatives to enhance graduates’
employability in Tanzania, having implemented internships and other graduate programmes for several years. GGML is contributing towards skills development in...
Baada ya Kuwaudhi Mashabiki katika Mashamba ya Mpunga na kuachwa rasmi Alama ( Points ) Tatu ( 3 ) na Mabingwa wa NBC Premier League kwa Msimu wa 2023/2024 ili Kurejesha Imani yao Kwetu Kigamboni Wavuvi FC tumeamua Kumalizana (Kuwahonga ) tutakakutana nao Keshokutwa Jumamosi ili siyo tu...
Position: Serviceman
Job Category: Underground Mining
Job Schedule: Full time
Location: Tarime, Tarime, P.O. Box 422, TZ
Join our exceptional team and embody Barrick's core values as you work with us. We are in search of individuals who can champion Barrick's DNA by:
Communicating Honestly...
Position: Trainer
Position Description
Bulyanhulu Gold Mine is seeking to recruit a trainer to join and grow our team.
Join our exceptional team and embody Barrick’s core values as you work with us. We are in search of individuals who can champion Barrick’s DNA by:
Communicating Honestly...
Position: Field Compressor Technician (02 Vacancies)
Reporting to: Process Mechanical Foreman
Duration: Permanent
Location: Kahama, Shinyanga
Responsibilities:
Ensure safe work practices, i.e., attending compulsory safety courses and meetings, use of required PPE, incident/accident reporting...
Position: Hoist Driver
Reporting to: Shaft Operation Supervisor
Duration: Permanent
Responsibilities
Conduct pre use inspection, dailies, winder break test and trips
Facilitate the safe hoisting of persons, materials and ore, up and down the shaft
Record conditions of winding engine daily in...
Position: Assistant Boilermaker
Reporting to: Fabrication Workshop Supervisor
Duration: Permanent
RESPONSIBILITIES:
Ensure safe work practices, i.e., attending compulsory safety courses and meetings, use of required PPE, incident/accident reporting and ensuring total adherence to all Safety...
Position: Geological Database Assistant
Reporting to: Geological Database Administrator
Duration: Permanent
Location: Kahama, Shinyanga
Responsibilities
Database management: with the example, the required candidate for this position is required to assist the Database Administrators to...
Position: Hoist Engine Driver
Reporting to: Shaft Operation Supervisor
Duration: Permanent
RESPONSIBILITIES:
Conduct pre-use inspection, dailies, winder break test and trips
Facilitate the safe hoisting of persons, materials and ore, up and down the shaft
Record conditions of winding engine...
Binafsi napenda mziki mzuri, hasa kulingana na nyakati.
Hali ya hewa leo na huu muda wa usiku hizi ngoma zinachoma moyoni sana.
1> Bane by Oliver NGoma
2>Samba Mpangala -Marina
3> Monique Seka -Okaman
4> M. Seka -Adeba
5> O. N'Goma -Fely
Etc
Aisee mizigo ni mingi wacha niwaachie wadau (Wazee...
Summary
📋 Tanzania expropriated the SMP gold project, a 12-year-long investment to explore and develop a gold mine, without offering prompt, adequate, and effective compensation, violating the Canada-Tanzania bilateral investment treaty.
Facts
Tanzania attracted foreign mining investments in...
MADINI YAPONGEZWA KWA KUTOA ELIMU NA KAMPUNI YA GGML
#GGML wapongeza Mkaa mbadala wa STAMICO
#GGML Kinara uchangiaji huduma kwa jamii
Wizara ya Madini imepongezwa na Kampuni ya Geita Gold Mining Limited (GGML) kwa kutoa elimu kwa wananchi na wadau wanaotembelea banda la Wizara, taasisi zake...
Abstract:
Accountability and good governance are crucial factors in the gold mining sector in Geita, Tanzania. This sector significantly contributes to the country's economy while providing employment opportunities to a large number of people. However, in order to drive positive change and...
Waandishi wa habari undercover wanajifanya kuwa majambazi wenye dola bilioni moja za pesa chafu zinazohitaji kusafishwa. Wanapata upenyo kwa wanachama wa Afrika wa Gold Mafia na kurekodi mikutano ya siri na viongozi wa uhalifu.
Balozi Mkubwa wa Afrika anatoa huduma ya kutakatisha pesa chafu...
Wakuu Leo nilikua nachezea chezea simu yangu kidogo nikakumbuka zile medali za Yanga kuwa za Shaba hapo moja kwa moja nikawaza dhahabu tulizojaaliwa NCHINI lakini ndo hivyo tena bila kombe dhahabu hauvai hata ukachovye kwa sonara lakini bado inabaki vile vile.
Hali hiyo ilinifanya nizame chimbo...
ABOUT GEITA GOLD MINING LTD
Geita Gold Mining Ltd (GGML) is Tanzania’s leading gold producer with a single operation in Geita Region. The company is a subsidiary of AngloGold Ashanti, an international gold producer headquartered in South Africa, with operations in more than ten countries, in...
Kampuni ya uchimbaji dhahabu ya Shanta imesema imepata dhahabu yake ya kwanza kwenye mgodi wake wa Singida yenye uzito wa wakia 35 baada ya kufanya uchenjuaji.
Wakia 35 za dhahabu zilizalishwa huku nyingine 500 zikiwa kwenye mchakato. Mkurugenzi wake, Eric Zurrin amesema hii ni hatua kubwa kwa...
Hii series inasikitisha sana. Inaeleza jinsi wahuni wanavyotumia biashara ya kuexport dhahabu kutoka Africa kwenda Dubai wanavyotakatisha pesa.
Mapastor fake wamejaa humo ndani.
.
Yaan ni kama Wee Jamaaz Umsomeshe Demu iwe kuanzia shule au Chuo Cha Kati au Chuo Kikuu Kwa ahadi ya Demu Kuolewa Nawewe.
Alafu Demu baada ya kusoma ale Kona ...
Dai chako !!!! Dai Chako.!! KATAA WIZI !!KATAA KUIBIWA !!
Kuna kipindi nmewahi msikiliza Mwanasheria Mmoja akitoa Elimu ya...
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