40-50 Minutes, 3 minutes per station, 13 Stations, samples provided by UWM and Pierre Couture

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1 Event: Judge: Rocks & Minerals Pierre couture Minutes, 3 minutes per station, 13 Stations, samples provided by UWM and Pierre Couture 1-4 Minerals (50 points total) 5-7 Igneous Rocks (50 points total) 8-10 Sedimentary rocks (50 points total) Metamorphic Rocks (50 points total) Station 1 Minerals (10 Pts). What is the definition of a mineral? 5 Pts (Solid, Inorganic, Naturally Occurring, with a Specific Chemical Composition and a Ordered Internal Structure) Answer must contain all of these components. -1 point for each one missed What ore mineral, mined in Wisconsin during the 1800's led to Wisconsin's being nicknamed named the badger state? (Galena. Welsh miners dug holes into the hillsides which looked like badger holes thus earning Wisconsin the nickname, "The Badger State".) (5 pts) Station 2 Minerals (10 Pts, 2 per sample, 5 samples used) Samples will be finalized once actual samples are evaluated for ease of use. Rank the following minerals in order of hardness (Need to get minerals from UWM and place in stations in advance.) 1 Point for each mineral in the correct position. Several options for each hardness to find a good sample. Hardness 1 Talc or Graphite Hardness 2 Gypsum Hardness 3 Barite, Bornite, Calcite Sphalerite, Celestite Hardness 4 Chalcopyrite, Fluorite Hardness 5 Apatite Sodalite Hardness 6 Orthoclase Albite Hardness 7 Almandine, Quartz Hardness 8 Topaz Hardness 9 Corundum

2 Station 3 Minerals (20 pts) Identify these ores, write down the formula, and the metal associated with them. 3 points for each mineral. 5 ore samples. Hemitite (Iron), Sphalerite (Zinc), Barite (Barium), chalcopyrite (copper), Galena (Lead) Station 4 Minerals (10 Pts) Identify the following 5 Minerals. Find samples not used above, or more challenging ones fluorite, calcite, sphalerite, Corundum (Ruby or Sapphire), Beryl (Emerald) (Aquamarine) Station 5 Igneous Rocks (20 Pts) Identify these igneous rocks and the setting in which they were formed (Intrusive or Extrusive) Andesite extrusive, Basalt extrusive, Diorite intrusive, Gabbro intrusive, Granite intrusive, Obsidian extrusive, Pegmatite intrusive, Pumice extrusive, Rhyolite extrusive, Scoria extrusive Station 6 Igneous rocks (20 pts, 5 per question) Part 1) Using the igneous rock chart provided, identify the rock type based on the % of minerals present in each rock and the texture. Chart attached with key Rock A, coarse grained, 26% Orthoclase, 32% Quartz, 19% Plagioclase, 8% Muscovite, 5% Biotite, 10% Amphibole (Granite) Rock B fine grained, 8% Orthoclase, 23% Quartz, 40% Plagioclase, 6% Muscovite, 8% biotite, 15% Amphibole (Andesite) Rock C coarse grained, 57% Plagioclase, 23% pyroxene, 20% Amphibole (Gabbro) Part 2) Using the igneous rock chart provided, list the mineral percentages for the line on the chart marked rock D (7% Quartz, 63% Plagioclase, 2% Muscovite, 6% Biotite, 22% Amphibole) Chart attached with key.

3 Station 7 Igneous rocks (10 Pts) What is Wisconsin's State rock? Red Granite (2 pts) What causes the glassy texture in Obsidian? (Rapid cooling) (2 pts) What do the terms felsic and mafic refer to when describing igneous rocks? (Felsic refers to higher contents of feldspar and silica minerals, and mafic refers to higher percentages of iron and magnesium minerals.) (4pts) What type of lava erupts from Hawaii's volcanoes? (Basaltic) (1 pts) What is the predominant rock type of the Andes mountains in south America? (andesite) (1 pts) Station 8 Sedimentary Rocks (20 Pts) For the following clastic sedimentary rocks, identify the rock and an environment where it might be deposited. Sandstone (river, dune, beach, delta.) Shale, lake, deep ocean, flood plain, lithified clays from chemical weathering, mudflats, shallow continental seas, continental shelves, continental slopes, seas or ocean basins Limestone Sample (Reefs, and other shallow water environments, shorelines dominated by carbonate sand. Conglomerate (River or pebble beach) Station 9 Sedimentary Rocks (20 Points) Identify the following nonclastic sedimentary rocks and an environment where they might form rocksalt, tidal flats, shallow seas, Rockgypsum, tidal flats, shallow seas, Chert, Ocean bottom, accumulation of microscopic silica shells Peat, swamps, accumulation of plant matter (Use my sample of peat) Coal swamps, accumulation of plant matter, buried and heated peat

4 Station 10 Sedimentary Rocks (10 Pts) There are four main types of natural cement that hold grains together in sedimentary rocks. Name these types of cement. (silica, calcite, clay minerals, iron oxide). (2 pts) How are clastic sedimentary rocks formed? (2 pts) Name an environment that will produce crossbedding features? (2 pts) Wisconsin's Niagara escarpment is a fantastic geographical feature. High Cliff state park and door county are two areas where its beauty is exposed. The Niagara escarpment is made from Silurian dolostone. What is the element found in dolostone that is not found in limestone. Magnesium (4 pts) Station 11 Metamorphic rocks (20 pts) Identify these metamorphic rocks and list their protoliths Greenstone - Basalt Marble - Limestone Gneiss - Granite, or shale Schist - Shale Slate - Shale

5 Station 12 Metamorphic rocks (20 pts) For the following metamorphic rocks, complete the metamorphic rock identification chart. Phyllite, foliated, mica, chlorite, mudstone, Phyllite Gneiss, foliated, gneissic banding, feldspar mica quartz, schist, gneiss Schist, foliated, schistose, mica, quartz (garnet?), slate, Schist Marble, non-foliated, calcite, limestone, marble Slate, foliated, slaty, mica, mudstone/shale, slate Modify chart once samples are available to ensure minerals are visibly identifiable. Denote if sample reacts to HCl. Texture Foliated Non- Foliated foliation Metamorphic rock Identification Chart Primary Mineral Composition Protolith or not (Use or not?) Rock Name Slaty mica Mudstone Slate Phyllitic quartz, mica, chlorite Mudstone Phyllite mica, quartz Slate Schist Schistose Basalt or amphibole, plagioclase Gabbro Amphibolite Gneissic Banding feldspare, mica, quartz Schist Gneiss carbon Bituminous coal Anthracite coal Station 13 Metamorphic Rocks (10 Pts) quartz, rock fragments conglomerate Metaconglomerate calcite Limestone Metabreccia quartz Sandstone Marble Quartzite Wisconsin's own Devil's Lake state park and the Baraboo range is world famous. Geologists from all over the world have come here to study its unique features. What metamorphic rock are the bluffs of Devil's Lake made from and what rock is this rocks protolith. (4 pts) What chemical processes occur during metamorphism and deformation? Recrystalization, Remobilization, Pressure solution (3 pts) What physical processes can occur during metamorphism? Deformed Grains and clasts, rotation, shearing (3 Pts)

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8 Southeast Regional Rocks & Minerals 2/1/14 Names: School: Stations 1-4 Minerals (50 points total) 5-7 Igneous Rocks (50 points total) 8-10 Sedimentary rocks (50 points total) Metamorphic Rocks (50 points total) Tiebreaker Station 1 Minerals (10 Pts). What is the definition of a mineral? (5 pts) What ore mineral, mined in Wisconsin during the 1800's led to Wisconsin's being nicknamed named the badger state? (5 pts) Station 2 Minerals Hardness (10 Pts, 2 per sample, 5 samples used) Rank the following minerals in order of hardness Softest Hardest Mineral # Hardness Page 1 of 6

9 Southeast Regional Rocks & Minerals 2/1/14 Station 3 Minerals (20 pts) Identify these ores, write down their formula, and the metal associated with them Mineral Sample Ore Formula Metal Station 4 Minerals (10 Pts) Identify the following 5 Minerals. Mineral Sample Mineral I.D Station 5 Igneous Rocks (20 Pts) Identify these igneous rocks and the setting in which they were formed (Intrusive or Extrusive) Rock Sample Rock Name Igneous Setting Page 2 of 6

10 Southeast Regional Rocks & Minerals 2/1/14 Station 6 Igneous rocks (20 pts, 5 per question) Part 1) Using the igneous rock chart provided, identify the rock type based on the % of minerals present in each rock and the texture. Rock A, coarse grained, 26% Orthoclase, 32% Quartz, 19% Plagioclase, 8% Muscovite, 5% Biotite, 10% Amphibole Rock A is Rock B fine grained, 8% Orthoclase, 23% Quartz, 40% Plagioclase, 6% Muscovite, 8% biotite, 15% Amphibole Rock B is Rock C coarse grained, 57% Plagioclase, 23% pyroxene, 20% Amphibole (Gabbro) Rock C is Part 2) Using the igneous rock chart provided, list the mineral percentages for the line on the chart marked rock D List the % minerals Station 7 Igneous rocks (10 Pts) What is Wisconsin's State rock? (2 pts) What causes the glassy texture in Obsidian? (2 pts) What do the terms felsic and mafic refer to when describing igneous rocks? (4pts) What type of lava erupts from Hawaii's volcanoes? (1 pts) What is the predominant rock type of the Andes mountains? (1 pts) Page 3 of 6

11 Southeast Regional Rocks & Minerals 2/1/14 Station 8 Sedimentary Rocks (20 Pts) For the following clastic sedimentary rocks, identify the rock and an environment where it might be deposited. Rock Sample Rock Name Environment of Deposition Station 9 Sedimentary Rocks (20 Points) Identify the following nonclastic sedimentary rocks and an environment where they might form Rock Sample Rock Name Environment of Deposition Station 10 Sedimentary Rocks (10 Pts) Name the three common types of natural cement that hold grains together in clastic sedimentary rocks. (2 pts) How are clastic sedimentary rocks formed? (2 pts) Name an environment that will produce crossbedding features? (2 pts) Page 4 of 6

12 Southeast Regional Rocks & Minerals 2/1/14 Wisconsin's Niagara escarpment is a fantastic geographical feature. High Cliff state park and door county are two areas where its beauty is exposed. The Niagara escarpment is made from Silurian dolostone. What is the element found in dolostone that is not found in limestone. (4 pts) Station 11 Metamorphic rocks (20 pts) Identify these metamorphic rocks and list their protoliths. Rock Sample Rock Name (2pts) Protolith (3pts) Station 12 Metamorphic rocks (20 pts) For the following metamorphic rocks, complete the metamorphic rock identification chart. Rock Sample Foliation Primary Mineral Rock Name Components Page 5 of 6

13 Southeast Regional Rocks & Minerals 2/1/14 Station 13 Metamorphic Rocks (10 Pts) Wisconsin's own Devil's Lake state park and the Baraboo range is world famous. Geologists from all over the world have come here to study its unique features. What metamorphic rock are the bluffs of Devil's Lake made from and what rock is its protolith. (4 pts) What three chemical processes occur during metamorphism and deformation? Recrystalization, Remobilization, Pressure solution (3 pts) What physical processes can occur during metamorphism? Deformed Grains and clasts, rotation, shearing (3 Pts) Tiebreaker This mineral exhibits a special property. What is the mineral? What is the special property? How does this special property work? Page 6 of 6

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2. What is sample 1B? a. chalcopyrite b. plagioclase feldspar c. muscovite d. copper e. magnetite f. galena g. pyrite

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