- Impact Deposits Corp. Is a purpose-driven company that proactively builds mutually-beneficial relationships between community banks, nonprofits, and partners to accelerate positive economic and social outcomes.
- Commercial bank deposits account for most of the money supply in use today. For example, if a bank in the United States makes a loan to a customer by depositing the loan proceeds in that customer's checking account, the bank typically records this event by debiting an asset account on the bank's books (called loans receivable or some similar.
- Deposits of checks that have already been returned unpaid Notification to Wells Fargo by the check maker's financial institution that the check will be returned. For questions or information about a hold placed on a check or deposit, please contact a customer service supervisor at 1-800- TO - WELLS ( 1-800-869-3557 ), 24 hours a day, 7 days a week.
Find 89 ways to say deposits, along with antonyms, related words, and example sentences at Thesaurus.com, the world's most trusted free thesaurus.
Federal law mandates that all Federal benefit payments – including Social Security and Supplemental Security Income benefits – must be made electronically.
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There are two ways you can receive your benefits:
- Into an existing bank account via Direct Deposit or
- Onto a Direct Express® Debit Mastercard®
Direct Deposit is the best electronic payment option for you because it is:
- Safe – Since your money goes directly into the bank in the form of an electronic transfer, there's no risk of a check being lost or stolen.
- Quick – It's easy to receive your benefit by Direct Deposit. You can sign up online at Go Direct®, by calling 1-800-333-1795, in person at your bank, savings and loan or credit union, or calling Social Security. Then, just relax. Your benefit will go automatically into your account every month. And you'll have more time to do the things you enjoy!
- Convenient – With Direct Deposit, you no longer have to stand in line to cash your check when it arrives. Your money goes directly into your account. You don't have to leave your house in bad weather or worry if you're on vacation or away from home. You don't have to pay any fees to cash your checks. Your money is in your account ready to use when business opens the day you receive your check.
If you are applying for Social Security or Supplemental Security Income benefits, you must elect to receive your benefit payment electronically when you enroll. If you currently receive Social Security or Supplemental Security Income benefits by check, you must switch to an electronic payment option listed above.
To learn more about how to easily switch from a paper check to an electronic payment option, visit Treasury's Go Direct website or call the Treasury's Electronic Payment Solution Center at 1-800-333-1795. You can also create a mySocial Security account and start or change Direct Deposit online.
In extremely rare circumstances, Treasury may grant exceptions to the electronic payment mandate. For more information or to request a waiver, call Treasury at 855-290-1545. You may also print and fill out a waiver form and return it to the address on the form.
If you have any questions, call Social Security at 1-800-772-1213 (TTY 1-800-325-0778).
- Ore minerals
- Formation of mineral deposits
- Magmatic concentration
- Hydrothermal solution
- Groundwater
- Seawater or lake water
- Rainwater
- Flowing surface water
Our editors will review what you've submitted and determine whether to revise the article.
Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Brian J. SkinnerMineral deposit, aggregate of a mineral in an unusually high concentration.
About half of the known chemical elements possess some metallic properties. The term metal, however, is reserved for those chemical elements that possess two or more of the characteristic physical properties of metals (opacity, ductility, malleability, fusibility) and are also good conductors of heat and electricity. Approximately 40 metals are made available through the mining and smelting of the minerals in which they occur.
Certain kinds of mineral can be smelted more readily than others; these are commonly referred to as ore minerals. Ore minerals tend to be concentrated in small, localized rock masses that form as a result of special geologic processes, and such local concentrations are called mineral deposits. Mineral deposits are what prospectors seek. The terms ore mineral and mineral deposit were originally applied only to minerals and deposits from which metals are recovered, but present usage includes a few nonmetallic minerals, such as barite and fluorite, that are found in the same kinds of deposit as metallic minerals.
No deposit consists entirely of a single ore mineral. There are always admixtures of valueless minerals, collectively called gangue. The more concentrated an ore mineral, the more valuable the mineral deposit. For every mineral deposit there is a set of conditions, such as the level of concentration and the size of the deposit, that must be reached if the deposit is to be worked at a profit. A mineral deposit that is sufficiently rich to be worked at a profit is called an ore deposit, and in an ore deposit the assemblage of ore minerals plus gangue is called the ore.
All ore deposits are mineral deposits, but the reverse is not true. Ore deposit is an economic term, while mineral deposit is a geologic term. Whether a given mineral deposit is also an ore deposit depends on many factors other than the level of concentration and the size of the deposit; all factors that affect the mining, processing, and transporting of the ore must be considered as well. Among such factors are the shape of a deposit, its depth below the surface, its geographic remoteness, access to transportation, the political stability of the region, and market factors such as the price of the metal in world trade and the costs of borrowing the money needed to develop a mine. Because market factors change continually, a given mineral deposit may sometimes be an ore deposit, but at other times it may be uneconomic and hence not an ore deposit.
Mineral deposits have been found both in rocks that lie beneath the oceans and in rocks that form the continents, although the only deposits that actually have been mined are in the continental rocks. (The mining of ocean deposits lies in the future.) The continental crust averages 35–40 kilometres (20–25 miles) in thickness, and below the crust lies the mantle. Mineral deposits may occur in the mantle, but with present technology it is not possible to discover them.
Deposits Definition
Geochemically abundant and scarce metals
Metals used in industrial and technological applications can be divided into two classes on the basis of their abundance in Earth's crust. The geochemically abundant metals, of which there are five (aluminum, iron, magnesium, manganese, and titanium), constitute more than 0.1 percent by weight of Earth's crust, while the geochemically scarce metals, which embrace all other metals (including such familiar ones as copper, lead, zinc, gold, and silver), constitute less than 0.1 percent. In almost every rock, at least tiny amounts of all metals can be detected by sensitive chemical analysis. However, there are important differences in the way the abundant and scarce metals occur in common rocks. Geochemically abundant metals tend to be present as essential constituents in minerals. For example, basalt, a common igneous rock, consists largely of the minerals olivine and pyroxene (both magnesium-iron silicates), feldspar (sodium-calcium-aluminum silicate), and ilmenite (iron-titanium oxide). Careful chemical analysis of a basalt will reveal the presence of most of the geochemically scarce metals too, but no amount of searching will reveal minerals in which one or more of the scarce metals is an essential constituent.
Deposits Not Available For Withdrawal
Geochemically scarce metals rarely form minerals in common rocks. Instead, they are carried in the structures of common rock-forming minerals (most of them silicates) through the process of atomic substitution. This process involves the random replacement of an atom in a mineral by a foreign atom of similar ionic radius and valence, without changing the atomic packing of the host mineral. Atoms of copper, zinc, and nickel, for example, can substitute for iron and magnesium atoms in olivine and pyroxene. However, since substitution of foreign atoms produces strains in an atomic packing, there are limits to this process, as determined by temperature, pressure, and various chemical parameters. Indeed, the substitution limits for most scarce metals in common silicate minerals are low—in many cases only a few hundred substituting atoms for every million host atoms—but even these limits are rarely exceeded in common rocks.
One important consequence that derives from the way abundant and scarce metals occur in common rocks is that ore minerals of abundant metals can be found in many common rocks, while ore minerals of scarce metals can be found only where some special, restricted geologic process has formed localized enrichments that exceed the limits of atomic substitution.
Ore minerals
Two factors determine whether a given mineral is suitable to be an ore mineral. The first is the ease with which a mineral can be separated from the gangue and concentrated for smelting. Concentrating processes, which are based on the physical properties of the mineral, include magnetic separation, gravity separation, and flotation. The second factor is smelting—that is, releasing the metal from the other elements to which it is chemically bonded in the mineral. Smelting processes are discussed below, but of primary importance in this consideration of the suitability of an ore mineral is the amount of energy needed to break the chemical bonds and release the metal. In general, less energy is needed to smelt sulfide, oxide, or hydroxide minerals than is required to smelt a silicate mineral. For this reason, few silicate minerals are ore minerals. Because the great bulk of Earth's crust (about 95 percent) is composed of silicate minerals, sulfide, oxide, and hydroxide ore minerals are at best only minor constituents of Earth's crust—and in many cases they are very rare constituents.
The preferred ore minerals of both geochemically abundant and geochemically scarce metals are native metals, sulfides, oxides, hydroxides, or carbonates. In a few cases, silicate minerals have to be used as ore minerals because the metals either do not form more desirable minerals or form desirable minerals that rarely occur in large deposits.
There are two ways you can receive your benefits:
- Into an existing bank account via Direct Deposit or
- Onto a Direct Express® Debit Mastercard®
Direct Deposit is the best electronic payment option for you because it is:
- Safe – Since your money goes directly into the bank in the form of an electronic transfer, there's no risk of a check being lost or stolen.
- Quick – It's easy to receive your benefit by Direct Deposit. You can sign up online at Go Direct®, by calling 1-800-333-1795, in person at your bank, savings and loan or credit union, or calling Social Security. Then, just relax. Your benefit will go automatically into your account every month. And you'll have more time to do the things you enjoy!
- Convenient – With Direct Deposit, you no longer have to stand in line to cash your check when it arrives. Your money goes directly into your account. You don't have to leave your house in bad weather or worry if you're on vacation or away from home. You don't have to pay any fees to cash your checks. Your money is in your account ready to use when business opens the day you receive your check.
If you are applying for Social Security or Supplemental Security Income benefits, you must elect to receive your benefit payment electronically when you enroll. If you currently receive Social Security or Supplemental Security Income benefits by check, you must switch to an electronic payment option listed above.
To learn more about how to easily switch from a paper check to an electronic payment option, visit Treasury's Go Direct website or call the Treasury's Electronic Payment Solution Center at 1-800-333-1795. You can also create a mySocial Security account and start or change Direct Deposit online.
In extremely rare circumstances, Treasury may grant exceptions to the electronic payment mandate. For more information or to request a waiver, call Treasury at 855-290-1545. You may also print and fill out a waiver form and return it to the address on the form.
If you have any questions, call Social Security at 1-800-772-1213 (TTY 1-800-325-0778).
- Ore minerals
- Formation of mineral deposits
- Magmatic concentration
- Hydrothermal solution
- Groundwater
- Seawater or lake water
- Rainwater
- Flowing surface water
Our editors will review what you've submitted and determine whether to revise the article.
Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Brian J. SkinnerMineral deposit, aggregate of a mineral in an unusually high concentration.
About half of the known chemical elements possess some metallic properties. The term metal, however, is reserved for those chemical elements that possess two or more of the characteristic physical properties of metals (opacity, ductility, malleability, fusibility) and are also good conductors of heat and electricity. Approximately 40 metals are made available through the mining and smelting of the minerals in which they occur.
Certain kinds of mineral can be smelted more readily than others; these are commonly referred to as ore minerals. Ore minerals tend to be concentrated in small, localized rock masses that form as a result of special geologic processes, and such local concentrations are called mineral deposits. Mineral deposits are what prospectors seek. The terms ore mineral and mineral deposit were originally applied only to minerals and deposits from which metals are recovered, but present usage includes a few nonmetallic minerals, such as barite and fluorite, that are found in the same kinds of deposit as metallic minerals.
No deposit consists entirely of a single ore mineral. There are always admixtures of valueless minerals, collectively called gangue. The more concentrated an ore mineral, the more valuable the mineral deposit. For every mineral deposit there is a set of conditions, such as the level of concentration and the size of the deposit, that must be reached if the deposit is to be worked at a profit. A mineral deposit that is sufficiently rich to be worked at a profit is called an ore deposit, and in an ore deposit the assemblage of ore minerals plus gangue is called the ore.
All ore deposits are mineral deposits, but the reverse is not true. Ore deposit is an economic term, while mineral deposit is a geologic term. Whether a given mineral deposit is also an ore deposit depends on many factors other than the level of concentration and the size of the deposit; all factors that affect the mining, processing, and transporting of the ore must be considered as well. Among such factors are the shape of a deposit, its depth below the surface, its geographic remoteness, access to transportation, the political stability of the region, and market factors such as the price of the metal in world trade and the costs of borrowing the money needed to develop a mine. Because market factors change continually, a given mineral deposit may sometimes be an ore deposit, but at other times it may be uneconomic and hence not an ore deposit.
Mineral deposits have been found both in rocks that lie beneath the oceans and in rocks that form the continents, although the only deposits that actually have been mined are in the continental rocks. (The mining of ocean deposits lies in the future.) The continental crust averages 35–40 kilometres (20–25 miles) in thickness, and below the crust lies the mantle. Mineral deposits may occur in the mantle, but with present technology it is not possible to discover them.
Deposits Definition
Geochemically abundant and scarce metals
Metals used in industrial and technological applications can be divided into two classes on the basis of their abundance in Earth's crust. The geochemically abundant metals, of which there are five (aluminum, iron, magnesium, manganese, and titanium), constitute more than 0.1 percent by weight of Earth's crust, while the geochemically scarce metals, which embrace all other metals (including such familiar ones as copper, lead, zinc, gold, and silver), constitute less than 0.1 percent. In almost every rock, at least tiny amounts of all metals can be detected by sensitive chemical analysis. However, there are important differences in the way the abundant and scarce metals occur in common rocks. Geochemically abundant metals tend to be present as essential constituents in minerals. For example, basalt, a common igneous rock, consists largely of the minerals olivine and pyroxene (both magnesium-iron silicates), feldspar (sodium-calcium-aluminum silicate), and ilmenite (iron-titanium oxide). Careful chemical analysis of a basalt will reveal the presence of most of the geochemically scarce metals too, but no amount of searching will reveal minerals in which one or more of the scarce metals is an essential constituent.
Deposits Not Available For Withdrawal
Geochemically scarce metals rarely form minerals in common rocks. Instead, they are carried in the structures of common rock-forming minerals (most of them silicates) through the process of atomic substitution. This process involves the random replacement of an atom in a mineral by a foreign atom of similar ionic radius and valence, without changing the atomic packing of the host mineral. Atoms of copper, zinc, and nickel, for example, can substitute for iron and magnesium atoms in olivine and pyroxene. However, since substitution of foreign atoms produces strains in an atomic packing, there are limits to this process, as determined by temperature, pressure, and various chemical parameters. Indeed, the substitution limits for most scarce metals in common silicate minerals are low—in many cases only a few hundred substituting atoms for every million host atoms—but even these limits are rarely exceeded in common rocks.
One important consequence that derives from the way abundant and scarce metals occur in common rocks is that ore minerals of abundant metals can be found in many common rocks, while ore minerals of scarce metals can be found only where some special, restricted geologic process has formed localized enrichments that exceed the limits of atomic substitution.
Ore minerals
Two factors determine whether a given mineral is suitable to be an ore mineral. The first is the ease with which a mineral can be separated from the gangue and concentrated for smelting. Concentrating processes, which are based on the physical properties of the mineral, include magnetic separation, gravity separation, and flotation. The second factor is smelting—that is, releasing the metal from the other elements to which it is chemically bonded in the mineral. Smelting processes are discussed below, but of primary importance in this consideration of the suitability of an ore mineral is the amount of energy needed to break the chemical bonds and release the metal. In general, less energy is needed to smelt sulfide, oxide, or hydroxide minerals than is required to smelt a silicate mineral. For this reason, few silicate minerals are ore minerals. Because the great bulk of Earth's crust (about 95 percent) is composed of silicate minerals, sulfide, oxide, and hydroxide ore minerals are at best only minor constituents of Earth's crust—and in many cases they are very rare constituents.
The preferred ore minerals of both geochemically abundant and geochemically scarce metals are native metals, sulfides, oxides, hydroxides, or carbonates. In a few cases, silicate minerals have to be used as ore minerals because the metals either do not form more desirable minerals or form desirable minerals that rarely occur in large deposits.
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