ThursdayFebruary 2, 2012

(Mineral Resources)

The Launch PadThursday, 2/2/12

What is the most common group of

minerals?the silicates

The Launch PadThursday, 2/2/12

Name two examples of non-silicate oxides.sapphire and ruby

Name two examples of non-silicate sulfides.galena and pyrite

Name two examples of non-silicate sulfates.gypsum and baryte

Name two examples of non-silicate carbonates.calcite and malachite

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Summative or Formative

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Date Due

Date Into

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Project: Fossils S1 1/9 1/13 1/18 2/1

Lab – Fossils F4 1/12 1/12

Quiz 16 S3 1/20 1/23 1/20 2/6

Lab – Rock Identification 1/24 1/24

Video Quiz – Rocks and Mineral 1/26 1/26

Quiz 17 S4 1/27 1/27 1/27 2/10

Activity – Rock and Mineral Properties F 1/30 1/30

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Mineral ResourcesMineral resources are Earth’s storehouse of useful minerals that can be recovered for use. Mineral reserves are already-

identified deposits of minerals that can be extracted.

Ores are useful metallic minerals that can be mined at

a profit. Economic factors may change

and influence a resource.

An underground halite (salt) mine

Figure 2.22

Hematite, an ore of iron

Gold, silver, copper, mercury, and lead are examples of metallic mineral resources.

Concentrations of these desirable

materials are produced by both igneous and

metamorphic processes.

Metallic Mineral Resources

The most important metallic ore deposits are

generated from hydrothermal (hot-water) solutions.

These hot solutions contain metal-rich

fluids, and are associated with cooling magma

bodies.

Metallic Mineral Resources

These types of deposits include:

–vein deposits in fractures or

bedding planes.

Metallic Mineral Resources

These types of deposits include:

–disseminated deposits which are distributed throughout the

rock

Metallic Mineral Resources

Disseminated Chalcopyrite and Pyriteina Chlorite Matrix

Heavily disseminated cubic pyrite in black stilpnomelane

Non-metallic mineral resources make use of the

material’snonmetallic physical and

chemical properties.

Non-Metallic Mineral Resources

Two broad groups of non-metallic

mineral resources: •Building materials

(e.g., limestone, gypsum)

Non-Metallic Mineral Resources

Two broad groups of non-metallic mineral

resources: •Industrial minerals (e.g.,

fluorite, corundum, sylvite)

Non-Metallic Mineral Resources

The annual per capita

consumption of nonmetallic and

metallic resources for the U.S. is about 12

tons. About 97% are nonmetallic.

Energy resources (oil,

coal, and natural gas) exceeds 12

tons.

MineralResources

Final QuestionBy what process are the most important

metallic ore deposits generated?

These deposits are generated from hydrothermal (hot-water) solutions, which

contain metal-rich fluids, and are associated with cooling magma bodies.