Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Gold chalcogenides
open-in-new
<p>Gold chalcogenides are compounds formed between <a href="/facts/Gold/1znknojp">gold</a> and one of the <a href="/facts/Chalcogen/nXLGmnqL">chalcogens</a>, elements from <a href="/facts/Group_16/nXLGmnqL">group 16</a> of the <a href="/facts/Periodic_table/umdGIfUb">periodic table</a>: <a href="/facts/Oxygen/acyn6o8r">oxygen</a>, <a href="/facts/Sulfur/IK0amTfM">sulfur</a>, <a href="/facts/Selenium/k975NApC">selenium</a>, or <a href="/facts/Tellurium/v7QvfIvS">tellurium</a>. </p> <ul><li><a href="/facts/Gold(III)_oxide/DA7D5KTx">Gold(III) oxide</a>, Au2O3. Decomposes into gold and oxygen above 160 °C, and dissolves in concentrated alkalis to form solutions which probably contain the [Au(OH)4]− ion</li> <li><a href="/facts/Gold(I)_sulfide/RoyITyQu">Gold(I) sulfide</a>, Au2S. Formed by reaction of <a href="/facts/Hydrogen_sulfide/UbCqjMMk">hydrogen sulfide</a> with gold(I) compounds.</li> <li><a href="/facts/Gold(III)_sulfide/4fbun6J1">Gold(III) sulfide</a>, Au2S3, claimed material but unsubstantiated.</li> <li>Gold tellurides: Au2Te3, Au3Te5, and AuTe2 (approximate formulas) are known as <a href="/facts/Non-stoichiometric_compound/DAssoN0e">non-stoichiometric compounds</a>. They show <a href="/facts/Electrical_resistivity_and_conductivity/akyCKvMy">metallic conductivity</a>. Au3Te5 is a <a href="/facts/Superconductor/pqQAlSzJ">superconductor</a> at 1.62 K.</li></ul> <p>Gold telluride minerals, such as <a href="/facts/Calaverite/QGSGUwHp">calaverite</a> and <a href="/facts/Krennerite/KDJdsux9">krennerite</a> (AuTe2), <a href="/facts/Petzite/TJ8jbtTK">petzite</a> (Ag3AuTe2), and <a href="/facts/Sylvanite/nYqIg2M6">sylvanite</a> (AgAuTe2), are minor ores of gold (and tellurium). See <a href="/facts/Telluride_mineral/pYrvaKCV">telluride minerals</a> for more information. </p> <ul><li><a href="/facts/Norman_Greenwood/XRDmRE8L">Greenwood, Norman N.</a>; Earnshaw, Alan (1997). <i>Chemistry of the Elements</i> (2nd ed.). <a href="/facts/Butterworth-Heinemann/c9nUxIVF">Butterworth-Heinemann</a>. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-0-08-037941-8.</li></ul>