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48 Cards in this Set
- Front
- Back
What is a ferromagnesian silicate?
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Ferromagnesian silicates contain iron and/or magnesium. They are normally dark coloroed and relatively heavy.
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What is the most abundant type of rock-forming minerals?
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Silicates. They comprise about 92% (by volume) of the earth's crust.
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What are the potassium feldspars?
What are the plagioclase feldspars? |
potassium, aluminum silicate
Plag.clase feldspars range fro socium, aluminum silicate to calcium, aluminum silicate |
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What is the most abundant type of rock-forming minerals?
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Silicates
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What are some examples of ferromagnesian silicates?
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amphibole
biotite mica garnet olivines (peridot) pyroxenes |
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Rock forming minerals
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Silicates
Carbonates Sulfates Halides |
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Tell me about feldspars.
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Feldspars are aluminum silicates w/sodium, calcium or potassium. They are the MOST abundant silicates at @ 5% of the earth's crust. Ex: potassium feldspar and plagioclase felspars
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What are rock-forming minerals?
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All major constituents of common rocks - quartz,potassium feldspar,mica
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Show me the plagioclase series chart
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What type of minerals have the most complex and largest molecules?
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Silicates
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What are nonferromagnesian silicates? What are some examples?
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NF silicates contain no iron or magnesium. Examples are mica, talc, clay minerals (porcelain made from clay and thickner for McDonalds milkshakes) quartz
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Tell me about native elements
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Minerals that conist of a single element. Ex: GOLD, SILVER, PLATINUM, COPPER, SULFUR, CARBON (DIAMONDS and GRAPHITE which is really CARBON)
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What are ore minerals?
Give two examples. |
Ores contain a useful metallic element or elements and can be mined, processed and sold at a profit. Most ores are mined to extract metals minerals. Ex: copper ore and iron ore.
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Tell me about halides
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Halides consist of a halogen gas combined w/ an alkali metal. Ex. HALITE (rock salt)which is sodium chloride. FLOURITE (calcium flouride) This is not a rock forming mineral and is used in toothpaste.
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What are the silicates that are also important minerals?
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a-b-c-m-o-p-p-s-q-g
amphibole biotite mica clay minerals muscovite olivine pyroxene potassium feldspars sodium/calcium plagioclase feldspars quartz garnet |
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What do non-ferromagnesian silicates look like and what are they made of? Give a few examples.`
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Lighter colored than non-ferromag. silicates
Silicates that don't contain iron or magnesium. Ex: muscovite mica, talc, clay mineral, quartz, feldspars |
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What are non-rock forming minerals and/or groups?
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Native elements (gold,
silver,etc.) Oxides Sulfides |
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What are two important silicates?
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Ferromagnesian Silicates (they contain magnesium)
Non-ferromagnesian silactes (those that don't contain magnesium) |
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Tell me about silicates.
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Definition: Silicates consist of at least silicon and oxygen and usually one or more of the following: aluminum, iron, calcium, sodium, potassium, magnesium. Other elements might also be present.
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What do ferromagnesian silicates look like and what are they made of? Give a few examples.
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Normally dark colored
Contain iron and/or magnesium Ex: olivines (peridot), pyroxenes, amphibooe, biotite mica, garnets |
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Tell me about the structure of silicates.
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Silicates have the most complex and largest molucules of any mineral group. There are a great many different structures, therefore, many different silicates. with a great range of physical properties. brittle-quartz, powder-talc, bendable-mica.
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Tell me about sulfates
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Sulfates consist of any appropriate element combined with sulfate ion Ex. are GYPSUM whose main use is sheetrock in houses which is also called plasterboard and BARIUM SULFATE which is used in x-rays of the intestines. It is non rock forming.
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Tell me about carbonates
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Carbonates contain any appropriate element combined with carbonate ions. They are non-silicate rock-forming minerals. Examples: CALCITE which is calcium carbonate CaCO The main use of calcium carbonate is to make concrete. Limestone is made from ca.carb. and is also used as a dietary supplement. DOLOMITE is calcium, magnesium carbonate
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What are rock-forming mineral groups?
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silicates
carbonates sulfates hallides |
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Which is more abundant in the earth's crust, rock forming or non-rock forming minerals?
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Rock forming are the most abundant.
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Tell me about sulfides
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Sulfides consiste of any appropriate element combined with sulfur. There are more ore minerals in this group than any other. Most important group of ore minerals.Ex: PYRITE(fool's gold), GALENA (lead ore) and MO state mineral SPHALARITE (zinc ore) used to make galvanized steel, smells like rotten eggs CHALCOPYRITE (copper and iron ore). Another type of fool's gold, tarnishes to different colores. When smelted you get copper and iron.
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Tell me about oxides
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Oxides consist of any appropriate element combined with oxyden. They are non-rock forming.
Ex: A. Ice (water) B.Iron oxides which are (in order of iron content)1magnetite,2hematite,3limoniteThe only iron ore that is magnetic is magnetite. All hematites give reddish borwn scratch. Hematite is the most common. C.Aluminum oxides. Ex:BAUXITE (aluminum ore) not pretty and it is the primary source of aluminum, CORUNDUM used as an abrasive plus two gem varieties-ruby and sapphire |
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What is a ferromagnesian silicate?
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The dark silicates. Minerals that contain inons of iron. Because of iron they are dark and have greater specific gravity. Most common dark silicates are: olivine, the pyroxenes, the amphiboles (also called hornblende) and biotite mica.
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What are ore minerals?
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Those useful metallic minerals that can be mined at a profit.
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Which of the mineral groups contain ore minerals?
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Which mineral group containes more ore than any other?
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List the mineral groups.
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What is magma?
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Magma is molten material that forms in certain environments in Earth's interior where temperatures and pressures are such that rock melts.
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Where does magma come from?
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From the earth's interior
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What is magma made of?
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LIQUID COMPONENTS: mostrly molten silicate minerals such as quartz, feldspars, mica & ferromagnesiums.
GASEOUS COMPONENTS: 70% water vapor, 20% carbon dioxide |
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What are the two most abundant gases dissolved in magma?
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Water - h20 - 70%
Carbon dioxide - 20% |
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What is viscosity?
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The measure of a fluid's resistance to flow.
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What are ore minerals?
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Ore minerals contain a useful metallic element or elements and can be mined, processed and sold at a profit. Most ores are mined to extract metals such as copper ore and iron ore.
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What are the mineral groups that contain ore minerals?
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Which mineral group contains more ore than any other?
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Which mineral groups contain ore minerals? Which groupp contains more than any other?
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What is magma?
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Underground liquid rock.
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Where does magma come from?
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Magma forms deep underground in the lower crust or upper mantle where temperatures are much hotter.
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What is magma made of?
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LIQUID COMPONENTS: mainly molten silicate minerals such as feldspars, quarts, mica and ferromagnesiums
GASEOUS COMPONENTS: 70% water steam, 20% carbon dioxide. |
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Why does magma most upward toward the Earth's surface?
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