White gold was originally developed to imitate platinum (a naturally white metal). White gold is usually an alloy containing about 75% gold and about 25% nickel and zinc. If stamped 18 karat, it would be 75% pure gold.
Related Content
What minerals produce the colors in fireworks?
Mineral elements provide the color in fireworks. Additional colors can be made by mixing elements: Color Produced Element(s) Primary mineral ore(s) bright greens barium barite deep reds strontium celestite blues copper chalcopyrite yellows sodium halite (rock salt) brilliant orange strontium + sodium celestite, halite silvery white titanium + zirconium + magnesium alloys ilmenite, rutile, zircon...
Where can I find information about mineral commodities?
For statistical information about mineral commodities, visit the USGS Commodity Statistics and Information website. For locations outside the United States, USGS International Minerals Statistics and Information is the best starting point.
What is the meaning of the karat mark on gold jewelry?
The fineness of jewelry gold is stated as the number of parts in twenty-four that are gold. Thus, 24 karat gold is pure gold; 12 K would be an alloy that is half gold and half copper or other metals.
What is the difference between a rock and a mineral?
A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite. A rock is an aggregate of one or more minerals, or a body of undifferentiated mineral matter. Common rocks include granite, basalt...
What is sterling silver?
Sterling silver is the standard of quality for articles containing 92.5% silver and 7.5% copper (and/or other alloys).
What is "Fool's Gold?"
Fool's Gold can be one of three minerals. The most common mineral mistaken for gold is pyrite. Chalcopyrite may also appear gold-like, and weathered mica can mimic gold as well. Compared to actual gold, these minerals will flake, powder, or crumble when poked with a metal point, whereas gold will gouge or indent like soft lead. In addition, actual gold will leave a golden yellow streak when...
How much silver has been found in the world?
Of the 1,740,000 metric tons of silver discovered to date, 55% is found in just four countries on earth. All the silver discovered thus far would fit in a cube 55 meters on a side. Learn more: USGS commodity website for silver
How much gold has been found in the world?
About 244,000 metric tons of gold has been discovered to date (187,000 metric tons historically produced plus current underground reserves of 57,000 metric tons). Most of that gold has come from just three countries: China, Australia, and South Africa. The United States ranked fourth in gold production in 2016. All of the gold discovered thus far would fit in a cube that is 23 meters wide on every...
How much copper has been found in the world?
To date, roughly 700 million metric tons of copper have been produced around the world. This would fit into a cube measuring about 430 meters on a side. Identified deposits contain an estimated 2.1 billion metric tons of additional copper, which brings the total amount of discovered copper to 2.8 billion metric tons. This would fit into a cube measuring 680 meters on a side. It is also estimated...
How do we extract minerals?
The primary methods used to extract minerals from the ground are: Underground miningSurface (open pit) miningPlacer mining The location and shape of the deposit, strength of the rock, ore grade, mining costs, and current market price of the commodity are some of the determining factors for selecting which mining method to use.Higher-grade metallic ores found in veins deep under the Earth’s surface...
How many pounds of minerals are required by the average person in a year?
To maintain our standard of living, each person in the United States requires over 40,630 pounds of minerals each year: 10, 765 pounds of stone 7,254 pounds of sand and gravel 685 pounds of cement 148 pounds of clays 383 pounds of salt 275 pounds of iron ore 168 pounds of phosphate rock 35 pounds of soda ash 34 pounds of aluminum 12 pounds of copper 11 pounds of lead 6 pounds of zinc 5 pounds of...
How large is a lifetime supply of minerals for the average person?
At today's level of consumption, the average newborn infant will need a lifetime supply of: 871 pounds of lead 502 pounds of zinc 950 pounds of copper 2,692 pounds of aluminum 21,645 pounds of iron ore 11,614 pounds of clays 30,091 pounds of salt 1,420,000 pounds of stone, sand, gravel, and cement Learn more: Mineral Resources: Out of the ground...into our daily lives
Geospatial analysis delineates lode gold prospectivity in Alaska
Alkalic-type epithermal gold deposit model; Chapter R in Mineral deposit models for resource assessment
A world of minerals in your mobile device
The life cycle of a mineral deposit: a teacher's guide for hands-on mineral education activities
Gold recycling in the United States in 1998
Rivers of gold; placer mining in Alaska
Gold
Undiscovered deposits of gold, silver, copper, lead, and zinc in the conterminous United States
Prospecting for gold in the United States
Related Content
- FAQ
What minerals produce the colors in fireworks?
Mineral elements provide the color in fireworks. Additional colors can be made by mixing elements: Color Produced Element(s) Primary mineral ore(s) bright greens barium barite deep reds strontium celestite blues copper chalcopyrite yellows sodium halite (rock salt) brilliant orange strontium + sodium celestite, halite silvery white titanium + zirconium + magnesium alloys ilmenite, rutile, zircon...
Where can I find information about mineral commodities?
For statistical information about mineral commodities, visit the USGS Commodity Statistics and Information website. For locations outside the United States, USGS International Minerals Statistics and Information is the best starting point.
What is the meaning of the karat mark on gold jewelry?
The fineness of jewelry gold is stated as the number of parts in twenty-four that are gold. Thus, 24 karat gold is pure gold; 12 K would be an alloy that is half gold and half copper or other metals.
What is the difference between a rock and a mineral?
A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite. A rock is an aggregate of one or more minerals, or a body of undifferentiated mineral matter. Common rocks include granite, basalt...
What is sterling silver?
Sterling silver is the standard of quality for articles containing 92.5% silver and 7.5% copper (and/or other alloys).
What is "Fool's Gold?"
Fool's Gold can be one of three minerals. The most common mineral mistaken for gold is pyrite. Chalcopyrite may also appear gold-like, and weathered mica can mimic gold as well. Compared to actual gold, these minerals will flake, powder, or crumble when poked with a metal point, whereas gold will gouge or indent like soft lead. In addition, actual gold will leave a golden yellow streak when...
How much silver has been found in the world?
Of the 1,740,000 metric tons of silver discovered to date, 55% is found in just four countries on earth. All the silver discovered thus far would fit in a cube 55 meters on a side. Learn more: USGS commodity website for silver
How much gold has been found in the world?
About 244,000 metric tons of gold has been discovered to date (187,000 metric tons historically produced plus current underground reserves of 57,000 metric tons). Most of that gold has come from just three countries: China, Australia, and South Africa. The United States ranked fourth in gold production in 2016. All of the gold discovered thus far would fit in a cube that is 23 meters wide on every...
How much copper has been found in the world?
To date, roughly 700 million metric tons of copper have been produced around the world. This would fit into a cube measuring about 430 meters on a side. Identified deposits contain an estimated 2.1 billion metric tons of additional copper, which brings the total amount of discovered copper to 2.8 billion metric tons. This would fit into a cube measuring 680 meters on a side. It is also estimated...
How do we extract minerals?
The primary methods used to extract minerals from the ground are: Underground miningSurface (open pit) miningPlacer mining The location and shape of the deposit, strength of the rock, ore grade, mining costs, and current market price of the commodity are some of the determining factors for selecting which mining method to use.Higher-grade metallic ores found in veins deep under the Earth’s surface...
How many pounds of minerals are required by the average person in a year?
To maintain our standard of living, each person in the United States requires over 40,630 pounds of minerals each year: 10, 765 pounds of stone 7,254 pounds of sand and gravel 685 pounds of cement 148 pounds of clays 383 pounds of salt 275 pounds of iron ore 168 pounds of phosphate rock 35 pounds of soda ash 34 pounds of aluminum 12 pounds of copper 11 pounds of lead 6 pounds of zinc 5 pounds of...
How large is a lifetime supply of minerals for the average person?
At today's level of consumption, the average newborn infant will need a lifetime supply of: 871 pounds of lead 502 pounds of zinc 950 pounds of copper 2,692 pounds of aluminum 21,645 pounds of iron ore 11,614 pounds of clays 30,091 pounds of salt 1,420,000 pounds of stone, sand, gravel, and cement Learn more: Mineral Resources: Out of the ground...into our daily lives
- Multimedia
- Publications
Geospatial analysis delineates lode gold prospectivity in Alaska
Comprehensive, data-driven geographic information system analyses utilize publicly available lithologic, geochemical, geophysical, and mineral occurrence datasets to delineate gold resource potential in Alaska. These prospectivity analyses successfully identify areas containing known lode gold occurrences, expand areas of high prospectivity around known occurrences, improve the precision of delineAuthorsSusan M. Karl, Douglas C. Kreiner, George N. D. Case, Keith A. LabayAlkalic-type epithermal gold deposit model; Chapter R in Mineral deposit models for resource assessment
This report summarizes the primary characteristics of alkalic-type epithermal gold (Au) deposits and provides an updated descriptive model. These deposits, primarily of Mesozoic to Neogene age, are among the largest epithermal gold deposits in the world. Considered a subset of low-sulfidation epithermal deposits, they are spatially and genetically linked to small stocks or clusters of intrusions cAuthorsKaren D. Kelley, Paul G. Spry, Virginia T. McLemore, David L. Fey, Eric D. AndersonA world of minerals in your mobile device
Mobile phones and other high-technology communications devices could not exist without mineral commodities. More than one-half of all components in a mobile device—including its electronics, display, battery, speakers, and more—are made from mined and semiprocessed materials (mineral commodities). Some mineral commodities can be recovered as byproducts during the production and processing of otherAuthorsJane E. Jenness, Joyce A. Ober, Aleeza Wilkins, Joseph GambogiThe life cycle of a mineral deposit: a teacher's guide for hands-on mineral education activities
This teacher's guide defines what a mineral deposit is and how a mineral deposit is identified and measured, how the mineral resources are extracted, and how the mining site is reclaimed; how minerals and mineral resources are processed; and how we use mineral resources in our every day lives. Included are 10 activitybased learning exercises that educate students on basic geologic concepts; the prAuthorsDave Frank, John Galloway, Ken AssmusGold recycling in the United States in 1998
In 1998, 175 metric tons (t) of refined gold was recovered by U.S. refiners from old and new scrap. The overall recycling rate was 29 percent when scrap consumption was compared with apparent domestic supply. Sources of old scrap includes discarded jewelry, dental materials, plating solutions, and electronic equipment. A very high old scrap recycling efficiency of 96 percent was reached in 1998, tAuthorsEarle B. AmeyRivers of gold; placer mining in Alaska
No abstract available.AuthorsWarren E. Yeend, Peter H. Stauffer, James W. HendleyGold
Through the ages, men and women have cherished gold, and many have had a compelling desire to amass great quantities of it -- so compelling a desire, in fact, that the frantic need to seek and hoard gold has been aptly named "gold fever." Gold was among the first metals to be mined because it commonly occurs in its native form -- that is, not combined with other elements -- because it is beautifulAuthorsHarold Kirkemo, William L. Newman, Roger P. AshleyUndiscovered deposits of gold, silver, copper, lead, and zinc in the conterminous United States
No abstract available.AuthorsRichard B. McCammonProspecting for gold in the United States
Prospecting for gold is something that probably everyone dreams of trying at least once. To the person who is mainly concerned with this activity as a vacation diversion, prospecting offers a special excitement. There is a constant hope that the next pan of sediment may be "pay dirt," and no other thrill can compare with that experienced when one sees even a few tiny flecks of gold glittering in tAuthors - News