Color Testing Trivia Questions

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  • 1/46 Questions

    Is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. Also, the ________is the flow of material from one rock type to another over geologic time

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About This Quiz

Explore the dynamic processes of the earth with this trivia on geological concepts. Assess your knowledge on rock cycles, minerals, and their properties such as color, luster, hardness, and streak. Ideal for learners interested in earth sciences.

Color Testing Trivia Questions - Quiz

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  • 2. 

    Naturally occurring compound or chemical element of atoms in a repetitive pattern

    Explanation
    A mineral is a naturally occurring compound or chemical element that is arranged in a repetitive pattern of atoms. This means that minerals are formed through natural processes and have a specific atomic structure. They can be found in various types of rocks and are typically solid, inorganic substances. Minerals have a wide range of physical and chemical properties and are often used in various industries for their valuable characteristics.

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  • 3. 

    Most apparent property. Usually with metallic luster same color, but varied with non-metallic luster

    Explanation
    The most apparent property mentioned in the question is color. It is stated that usually with metallic luster, the color is the same, but with non-metallic luster, the color varies. This suggests that color is a property that can help distinguish between metallic and non-metallic substances.

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  • 4. 

    Appearance of a mineral when light is reflected from its surface          Metallic: look like a metal, opaque, dull if exposed to air          Nonmetallic: Any color
Vitreous:Glass
Dull:Earthy appearance
Greasy: as if covered by oil

    Explanation
    Luster refers to the appearance of a mineral when light is reflected from its surface. It describes the way a mineral shines or reflects light. Metallic luster gives the mineral a look similar to that of a metal, appearing opaque and often dull when exposed to air. Nonmetallic luster can vary in color and can have different characteristics such as vitreous (glass-like), dull (earthy appearance), or greasy (as if covered by oil). Therefore, luster is the correct answer to describe the appearance of a mineral when light is reflected from its surface.

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  • 5. 

    Resistance to scratching          Mohs Hardness: Fingernail, copper coin, glass,knife,plate

    Explanation
    The given information about Mohs Hardness scale suggests that hardness is related to resistance to scratching. Hardness is a measure of a material's ability to resist scratching or indentation. The scale provides a relative ranking of minerals based on their hardness, with higher numbers indicating greater hardness. Therefore, the correct answer is "Hardness".

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  • 6. 

    Color of mineral when powdered Helps identify metallic lusters because others have a light streak

    Explanation
    The color of a mineral when powdered is known as its streak. When a mineral is rubbed against a hard surface and leaves a colored mark, it helps identify metallic lusters because other minerals with non-metallic lusters typically have a light streak. By observing the streak color, one can differentiate between metallic and non-metallic minerals.

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  • 7. 

    Varies in color (smoky, rose, milky..); Nonmetallic- vitreous luster; 7 H; conchoidal fracture;streakless because of hardness          Felsic

    Explanation
    The given characteristics such as varying color, nonmetallic vitreous luster, hardness of 7, conchoidal fracture, and streaklessness due to hardness, are all consistent with the mineral quartz. Therefore, the correct answer is quartz.

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  • 8. 

    Tastes like salt          Sedimentary rocks          Colorless to white; cubic cleavage; 2.5 H; nonmetallic; white streak

    Explanation
    Halite is a type of sedimentary rock that is colorless to white in appearance. It has a cubic cleavage and a hardness of 2.5 on the Mohs scale. It is nonmetallic and leaves a white streak. The description of "tastes like salt" further confirms that the answer is Halite, as Halite is commonly known as rock salt and is used as a seasoning due to its salty taste.

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  • 9. 

       Micas          Black to brownish black; nonmetallic vitreous; 2.5-3 H; faint gray streak; perfect cleavage; flexible & elastic in thin sheets          Intermediate

    Explanation
    Biotite is the correct answer because it matches the given description. Biotite is a type of mica that is black to brownish black in color, has a nonmetallic vitreous luster, has a hardness of 2.5-3, has a faint gray streak, exhibits perfect cleavage, and is flexible and elastic in thin sheets. The term "intermediate" is not relevant to the description of biotite.

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  • 10. 

    Dark grey to black; 6 H; metallic; black streak; fractured          Attracted to magnet, high specific gravity

    Explanation
    Magnetite is a mineral that exhibits a dark grey to black color. It has a hardness of 6 on the Mohs scale, which indicates its resistance to scratching. It has a metallic luster and leaves a black streak when rubbed against a surface. The mineral has a fractured texture. One of the distinctive properties of magnetite is its magnetic nature, as it is attracted to magnets. It also has a high specific gravity, meaning it is denser than most other minerals. Therefore, the given characteristics match those of magnetite.

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  • 11. 

    Yellow to green, granular, conchoidal fracture, 6.5-7 H, ;unstreakable-as hard as streak plates          May break into green granules          Mafic

    Explanation
    The given description suggests that the mineral in question has a yellow to green color, a granular texture, and a conchoidal fracture. It has a hardness of 6.5-7 on the Mohs scale and is as hard as streak plates. It may break into green granules. Additionally, it is classified as a mafic mineral. Based on these characteristics, the correct answer is olivene.

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  • 12. 

    Brass-yellow; 6 H; Metallic; fractured; green to black streak          Fool's Gold

    Explanation
    The given characteristics of the mineral, such as its brass-yellow color, metallic luster, and green to black streak, are all indicative of pyrite. Pyrite is commonly known as Fool's Gold because of its resemblance to real gold. It has a hardness of 6 on the Mohs scale and typically appears fractured when broken. Therefore, based on the provided information, the correct answer is pyrite.

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  • 13. 

    Clastic; rock fragments; angular; poorly sorted          Bases of cliffs, steep slopes

    Explanation
    Breccia is a type of clastic sedimentary rock composed of angular rock fragments that are poorly sorted. It is commonly found at the bases of cliffs and steep slopes. The rock fragments in breccia are typically larger and more angular compared to other clastic rocks, which indicates that they have not undergone much transportation or rounding. The poor sorting suggests that the rock fragments were deposited quickly and without much sorting by size. Therefore, the given characteristics of clastic, rock fragments, angular, and poorly sorted are all consistent with the description of breccia.

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  • 14. 

    Clastic; Quartz & sand grains; well sorted; well rounded          Beach, near shore, sand dunes

    Explanation
    Sandstone is a type of sedimentary rock that is primarily composed of sand-sized grains of mineral, rock, or organic material. The given information about clastic, quartz, sand grains, well sorted, and well rounded suggests that the sandstone is formed from the accumulation of sand grains that have been transported and deposited in a beach or nearshore environment. The presence of sand dunes also indicates that the sandstone may have been formed in a desert or arid environment.

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  • 15. 

    Noncrystalline; plant debris(carbon); well rounded; well sorted          Swamps          Fossils

    Explanation
    Coal is formed from the remains of plant debris that has been buried and subjected to heat and pressure over millions of years. The noncrystalline nature of coal indicates that it lacks a regular atomic structure, distinguishing it from crystalline substances. Additionally, coal is often well rounded and well sorted, indicating that it has undergone transportation and sorting processes, such as being carried by water. Therefore, the given characteristics of noncrystalline, plant debris, well rounded, and well sorted are all consistent with the formation and properties of coal.

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  • 16. 

               Fine-grained;silt and clay; well sorted; well rounded          Flood plains, freshwater lakes

    Explanation
    Shale is the correct answer because the given characteristics "fine-grained, silt and clay, well sorted, well rounded" are all associated with shale. Shale is a sedimentary rock composed of very fine particles, including silt and clay, that have been compacted and cemented together. It is typically well sorted, meaning the particles are similar in size, and well rounded. Shale is commonly found in flood plains and freshwater lakes, which matches the given information.

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  • 17. 

    Fine grained; silt; well rounded; well sorted          middle shelf

    Explanation
    Siltstone is the correct answer because the given terms "fine grained," "silt," "well rounded," and "well sorted" are all characteristics of siltstone. Siltstone is a sedimentary rock that is composed mainly of silt-sized particles, which are fine-grained. It is typically well rounded and well sorted, meaning the particles are similar in size and shape. The term "middle shelf" is likely referring to the location or environment where siltstone is commonly found.

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  • 18. 

    •   Cleavage breaks or cleaves along parallel lines •                  Fractures break along random irregular suraces •                  Cleavage plains: 3 (90), 2, 1 *6-8 not common

  • 19. 

    Thin parallel grroves

  • 20. 

    White to dark grey; nonmetallic; 6 H;white streak; 2 cleavages (almost 90);          striations          Ca=gray to dark grey          Can be peacock blue in some light          Mafic  

    Explanation
    The given information describes the physical properties of a mineral. It is white to dark grey in color, nonmetallic, has a hardness of 6 on the Mohs scale, and leaves a white streak. It has two cleavages that are almost at a 90-degree angle and shows striations. The mineral can be gray to dark grey in its calcium-rich form and may exhibit a peacock blue color in certain lighting conditions. These characteristics match those of Plagioclase Feldspar (CA), making it the correct answer.

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  • 21. 

       White to dark grey, nonmetallic; 6 H,white streak; 2 cleavages (almost 90);          striations          Na=Creamy, light          Intermediate

    Explanation
    The given characteristics of the mineral, such as its color, streak, cleavage, and striations, are consistent with those of plagioclase feldspar. Additionally, the notation "NA" likely refers to the sodium-rich variety of plagioclase feldspar, which is creamy and light in color. Therefore, the correct answer is Plagioclase Feldspar (NA).

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  • 22. 

    Pink,white,gray,green;Nonmetallic-vitreous luster; 6 H; white streak; 2 cleavages          no striations          Semi-parallel veinlets          Intermediate

    Explanation
    The given characteristics of the mineral match those of Potassium Feldspar. Potassium Feldspar can occur in various colors including pink, white, gray, and green. It has a nonmetallic-vitreous luster and a white streak. It also exhibits 2 cleavages and does not have striations. The presence of semi-parallel veinlets and the classification as intermediate further support the identification of the mineral as Potassium Feldspar.

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  • 23. 

       Steel to dull red; Red to brown streak; 6 H; Fractured; metallic luster; flaky          Most sedimentary

    Explanation
    The given characteristics, such as steel turning dull red, red to brown streak, 6 H hardness, fractured texture, metallic luster, and flaky appearance, are all consistent with the mineral hematite. Hematite is a common iron oxide mineral that often exhibits these properties. Additionally, the statement "Most sedimentary" suggests that hematite is commonly found in sedimentary rocks. Therefore, the correct answer is hematite.

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  • 24. 

    Clear, white, faintly colored; nonmetallic-vitreous;3 perfect cleavages; white streak          reacts with dilute hydrochloric acid - Bubbles

    Explanation
    Calcite is a clear, white, faintly colored nonmetallic mineral with a vitreous luster. It exhibits three perfect cleavages and has a white streak. One of the distinctive properties of calcite is its reaction with dilute hydrochloric acid, which causes it to produce bubbles. Therefore, based on the given characteristics, the correct answer is calcite.

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  • 25. 

    Silvery gray;metallic;2.5 H;Gray streak; Cubic cleavage

    Explanation
    Galena is a mineral that is silvery gray in color and has a metallic luster. It has a hardness of 2.5 on the Mohs scale, which means it is relatively soft. When galena is scratched against a surface, it leaves a gray streak. It also exhibits cubic cleavage, meaning it breaks along planes of weakness that form right angles. Therefore, based on the given characteristics, the correct answer is Galena.

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  • 26. 

    Gray to black; Metallic, 2-2.5 H,Dark gray streak;one cleavage;greasy luster

    Explanation
    Graphite is a form of carbon that is gray to black in color and has a metallic appearance. It has a hardness of 2-2.5 on the Mohs scale and leaves a dark gray streak when rubbed against a surface. Graphite has one cleavage, meaning it breaks easily along one direction, and it has a greasy luster. Therefore, based on the given characteristics, the correct answer is Graphite.

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  • 27. 

    Colorless,white;nonmetallic vitreous; 2-2.5 H; one perfect cleavage;white streak          Elastic in this sheets          Felsic

    Explanation
    The given information describes the physical and chemical properties of a mineral. It is colorless and white, nonmetallic, and has a vitreous (glass-like) appearance. It has a hardness of 2-2.5 on the Mohs scale and exhibits one perfect cleavage. The streak left by the mineral is white. Additionally, it is elastic in thin sheets and is classified as felsic. Based on these properties, the correct answer is Muscovite, which is a common mineral belonging to the mica group.

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  • 28. 

    Clear, white, light; 2 H, nonmetallic- vitreous to pearly; one cleavage, white streak          Brittle sheets

    Explanation
    Gypsum is a mineral that fits the given description. It is clear, white, and light in color. It consists of two hydrogen atoms and is a nonmetallic substance. Gypsum has a vitreous to pearly luster and exhibits one cleavage. It also has a white streak. Additionally, gypsum is known for its brittle sheets, which align with the "brittle sheets" mentioned in the description. Therefore, the correct answer is gypsum.

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  • 29. 

    Green to black; H 5; 2 imperfect cleavages (90)- hard to see; Nonmetallic-vitreous to dull; White streak          Not splintery-blocky          Mafic

    Explanation
    The given characteristics of the mineral include its color changing from green to black, a hardness of 5, and 2 imperfect cleavages that are difficult to see. It has a nonmetallic luster that can range from vitreous to dull, and leaves a white streak. It is not splintery or blocky in texture and is classified as mafic. Based on these properties, the mineral can be identified as Augite.

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  • 30. 

    Black; H 5-6;2 perfect cleavages (124 & 56) ; Nonmetallic- vitreous; white streak          Cleavages give splintery look          Intermediate

    Explanation
    Hornblende is a mineral that fits the given description. It is black in color and has a hardness of 5-6. It exhibits two perfect cleavages at angles of 124 and 56 degrees, which give it a splintery look when broken. Hornblende is a nonmetallic mineral with a vitreous or glassy luster. Its streak is white. Overall, hornblende is an intermediate mineral that matches all the given characteristics.

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  • 31. 

    Light yellow, yellow-brown,black, 3.5-4 H, Nonmetallic-resinous or vitreous          Smells of rotten eggs

    Explanation
    Sphalerite is a mineral that can be light yellow, yellow-brown, or black in color. It has a hardness of 3.5-4 on the Mohs scale, indicating its resistance to scratching. Its luster is nonmetallic and can be either resinous or vitreous. One distinctive characteristic of sphalerite is its smell, which is often described as resembling rotten eggs due to the presence of sulfur. Therefore, based on the given description, sphalerite fits all the provided properties and is the correct answer.

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  • 32. 

    Crystal Quartz, Calcite, Gypsum, Halite          All nonmetallic

  • 33. 

    .    Ca Plagioclase, Na Plagioclase, K Placioclase .    All have 2 directions of cleavage .    All nonmetallic

  • 34. 

    Olivine, Augite, Hornblende          All nonmetallic

    Explanation
    The answer "Dark Minerals and Their Luster" is the correct answer because Olivine, Augite, and Hornblende are all dark minerals. Luster refers to the way light interacts with the surface of a mineral, and nonmetallic minerals typically have a dull or earthy luster. Therefore, the statement "All nonmetallic" is incorrect because Olivine, Augite, and Hornblende are nonmetallic minerals but they have a distinct luster.

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  • 35. 

    Galena, graphite, magnetite, hematite          Metallic

  • 36. 

    Biotite, muscovite          Nonmetallic

    Explanation
    The statement suggests that the micas, which include biotite and muscovite, have a nonmetallic luster. This means that they do not have the shiny, reflective appearance typically associated with metals. Instead, they have a more dull or pearly luster.

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  • 37. 

    Most sedimentary rocks          Discrete clasts/grains of rocks, minerals or fossils

    Explanation
    Clastic texture refers to the composition and arrangement of sedimentary rocks, specifically those made up of discrete clasts or grains of rocks, minerals, or fossils. This texture is formed through the process of weathering, erosion, transportation, and deposition of sedimentary particles. The clasts or grains are typically cemented together by minerals, creating a solid rock. The presence of clastic texture indicates that the rock has undergone mechanical weathering and has been transported and deposited by natural processes such as rivers, wind, or glaciers.

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  • 38. 

    Rock has fossils or fassil fragments

    Explanation
    Bioclastic texture refers to a type of sedimentary rock texture that is composed of broken fragments of shells, coral, or other organic materials. These fragments are often visible within the rock and can be identified as fossils or fossil fragments. Therefore, the presence of fossils or fossil fragments in a rock indicates a bioclastic texture.

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  • 39. 

    Quartz, Microcrystalline quartz, feldspar, biotite, muscovite, clay, iron oxide, calcite, dolomite, gypsum, halite

    Explanation
    The given list includes various minerals commonly found in sedimentary rocks. Sedimentary rocks are formed through the accumulation and lithification of sediment, which is composed of particles derived from the weathering and erosion of pre-existing rocks. The minerals listed, such as quartz, feldspar, biotite, muscovite, clay, iron oxide, calcite, dolomite, gypsum, and halite, are commonly found in sedimentary rocks due to their abundance in the Earth's crust and their resistance to weathering and erosion processes. These minerals contribute to the formation and characteristics of sedimentary rocks.

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  • 40. 

       Microcrystalline; calcite; well sorted; well rounded          Deep Marine          Reacts with acid          Fossils

    Explanation
    Micritic limestone is the correct answer because it is a type of limestone that is composed predominantly of microscopic-sized calcite crystals, known as micrite. It is typically well sorted, meaning that the particles are of similar size, and well rounded, indicating that they have undergone transportation and erosion. Micritic limestone is commonly found in deep marine environments where fine-grained sediments accumulate. It also reacts with acid, a characteristic property of limestone. Fossils may also be present in micritic limestone, further supporting the identification of this rock type.

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  • 41. 

    Clastic; Gravel sized; cement and rock fragments; well rounded; poorly sorted          River/stream channels, alluvial fans

    Explanation
    The given answer "conglomerate" is correct because it matches the description provided. Conglomerate is a clastic sedimentary rock composed of gravel-sized particles that are well rounded and poorly sorted. It is formed in river/stream channels and alluvial fans, where the cement and rock fragments are deposited and compacted over time.

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  • 42. 

    Fossiliferous Limestone          Bioclastic; Calcite; cemented w/ crystalline matrix; well sorted; well rounded;          Continental reef          Fossils          Reacts with acid

    Explanation
    This answer correctly identifies the rock as Fossiliferous Limestone. The characteristics listed, such as being bioclastic, calcite cemented with a crystalline matrix, well sorted, well rounded, and containing fossils, are all typical of Fossiliferous Limestone. Additionally, the fact that it reacts with acid is another characteristic of this type of rock.

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  • 43. 

    Clastic; Quartz and K feldspar; poorly sorted; angular          Alluvial fans, beach, near shore

    Explanation
    The given answer "Arkose" is the correct answer because it matches the characteristics mentioned in the question. Arkose is a clastic sedimentary rock that contains mainly quartz and K feldspar. It is also known for being poorly sorted and having angular grains. The mention of alluvial fans, beach, and near shore environments further supports the identification of the rock as arkose, as these are common depositional environments for this type of sedimentary rock.

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  • 44. 

             Bioclastic; calcite; well sorted; well rounded          Deep marine          Fossils

    Explanation
    The given characteristics of "bioclastic, calcite, well sorted, well rounded" along with the environment "deep marine" and the presence of "fossils" suggest that the correct answer is "coquina". Coquina is a sedimentary rock composed mainly of fragmented shells and coral, which aligns with the bioclastic and fossil characteristics. The presence of calcite indicates that it is a type of limestone, while the well sorted and well rounded features suggest that the sediment has undergone transportation and sorting processes, which are common in deep marine environments.

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  • 45. 

    Microcrystalline; Quartz; well rounded; well sorted          Deep marine

    Explanation
    Chert is the correct answer because it is a type of microcrystalline quartz that is well rounded and well sorted. These characteristics suggest that the chert was formed in a deep marine environment where the sediment particles had enough time to become rounded and sorted before being deposited.

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  • 46. 

             Coal, Coquina, Micritic limestone, Follisiferous limestone

    Explanation
    The given answer states that the rocks mentioned (Coal, Coquina, Micritic limestone, Follisiferous limestone) are sedimentary rocks with fossils and acid. This means that these rocks were formed through the accumulation of sediments, which often contain fossils. Additionally, the presence of acid suggests that these rocks may have undergone chemical weathering or dissolution processes.

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  • Mar 14, 2023
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  • Oct 24, 2012
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    Bcainepatrick
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