Halite is also much softer than glass and can be easily scratched using a nail or metal surface. SURVEY. Medium - can be scratched by a knife or nail, Mohs' 3-5; Hard - cannot be scratched by a knife but can scratch glass, Mohs' 6-9; Diamond is the hardest known mineral, Mohs' 10. Medium - can be scratched by a knife or nail, Mohs' 3-5; Hard - cannot be scratched by a knife but can scratch glass, Mohs' 6-9; Diamond is the hardest known mineral, Mohs' 10. More than a century ago. If Specimen A does not scratch Specimen B, then Specimen B is harder than Specimen A. According to the Mohs' scale, which of the statements below is true? . Hardness 2.5. Q. Tags: Question 9 . The minerals talc, muscovite mica and quartz are similar because they. Diamond As you can see, diamond is a 10 on the Mohs Hardness Scale. Gypsum is harder: it can scratch talc but not calcite, which is even harder. answer choices . If a mineral is scratched by Topaz(8) but not by Quartz(7), and it can scratch Quartz, what is its hardness rating? The strongest rock in the world is diabase, followed closely by other fine-grained igneous rocks and quartzite. Corundum 10. Similarly, what mineral has a hardness of 7? 8: Topaz A piece of quartz can scratch fluorite but it cannot scratch topaz. A minerals rating on the hardness scale is determined by a scratch test. Crystals common, found in columns and easy to scratch with fingernail Gypsum 3 Directions at 90 Tastes like Salt Vitreous luster. Explanation: Diamond is the hardest mineral; no other mineral can scratch a diamond. answer choices. Rather, it is a method . A relative hardness value of 6.5 means that the mineral could scratch orthoclase (feldspar) but not quartz. 500. Each mineral in the scale scratches the one below it (the lower number) but not the … corundum, topaz, quartz, orthoclase. What number on the . Sometimes might have 3 Cleavages Vitreous to pearly luster. 6: Orthoclase: Orthoclase is a feldspar, and in German, "feld" means "field". Pyrite. Feldspar. In respect to this, can gypsum scratch quartz? 40 Questions Show answers. Examples would be quartz (7), topaz (Mohs 8), corundum (9), and diamond (10). 28. It can be scratched by topaz, corundum, and diamond. answer choices. For instance quartz will be able to scratch calcite with much greater ease than you can scratch calcite with fluorite. Soft - can be scratched by a fingernail, Mohs' 1-2; If a mineral cannot be scratched by a knife blade but can be scratched by quartz then its hardness is between 5 and 7 (stated as 5-7) on Mohs scale. Diamond is the hardest mineral; no other mineral can scratch a diamond. If Specimen A can scratch Specimen B, then Specimen A is harder than Specimen B. Which object will scratch apatite but not feldspar? Quartz 8. Amethyst will scratch diamond. 30 seconds. What hardness does a mineral have if it does not scratch glass but it scratches an iron nail? This is because feldspar is a 6 on the scale, and quartz is a 7. Mohs Hardness Scale Diamond is the hardest mineral; no other mineral can scratch a diamond. Which mineral will not scratch quartz? Diamond . Thus, a copper penny can scratch calcite, gypsum and talc, while a fingernail can scratch only gypsum and talc. What is the best way to determine if a mineral is calcite or quartz? a. quartz c. gypsum. A diamond B apatite C topaz . apatite, fluorite, calcite, gypsum, talc … of means that the mineral could scratch orthoclase (feldspar) but not quartz. Perfect cubic cleavage. Q. For example, if mineral A scratches mineral B, and mineral B does not scratch mineral . Mineral; 3: Calcite: 4: Fluorite: 5: Apatite: 6: Orthoclase feldspar: What mineral can scratch feldspar but not quartz? Question 1. Orthoclase (white) on quartz, Baveno, Italy Orthoclase crystal is 3 cm tall. This is a non-metallic mineral that comes in a variety of colors and has a hardness of 7. over 4,900 known mineral species. This is because feldspar is a 6 on the scale, and quartz is a 7. Diamond is the hardest mineral; no other mineral can scratch a diamond. Rather, it is a method . Each mineral can scratch only those below it on the scale. Quartz will scratch minerals that have a lower number on the scale. 500. . One can also get a relative feel for the hardness difference between two minerals. 1. What mineral scratches glass but will not scratch quartz? Quartz will scratch minerals that have a lower number on the scale. 3 4 Mineral Talc Gypsum Calcite . Can a penny scratch fluorite? Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5. It can be scratched by topaz, corundum, and diamond. According to the scale, Talc is the softest: it can be scratched by all other materials. Question 14. The atomic structure of a mineral determines what? So fluorite would scratch muscovite, but not vice versa. Because they can be exactly the same colour, we have to use different properties, like crystal shape and hardness to distinguish between them. Q. are the same color. 500. Q. Hardness 1 2. Notes: It must be noted that Mohs' scale is arbitrary and non-linear, i.e. A relative hardness value of 6.5 means that the mineral could scratch orthoclase (feldspar) but not quartz. Talc 2. Answer and Explanation: Objects that can scratch feldspar but not quartz would be those rated as a 7 on the Mohs hardness scale. 3)fluorite 4) quartz Which mineral can scratch A, B, and C, but can not scratch D? Mineral Lab: Halite Watch later Watch on What are two objects that will scratch fluorite? Multiple Answers: Olivine, Quartz, Garnet, Pyrite. have the same hardness. streak and hardness. Gypsum is harder: it can scratch talc but not calcite, which is even harder. What mineral will scratch glass but not a streak plate? For quartz, Mohs hardness = 7. You find that it can scratch fluorite or even apatite, but feldspar scratches it. Hardness mineral Mohs hardness observations on the minerals fluorite 4 very easily scratched with a knife but not as easily as calcite apatite 5 scratched with a knife with difficulty orthoclase 6 cannot be scratched with a knife, but scratches glass with difficulty quartz 7 scratches glass easily. 4. Question 1. Medium - can be scratched by a knife or nail, Mohs' 3-5; Hard - cannot be scratched by a knife but can scratch glass, Mohs' 6-9; Diamond is the hardest known mineral, Mohs' 10. Can talc scratch quartz? Gypsum . Mineral species are controlled by the Earth's chemistry. The diagrams represent the crystal shape and type of cleavage of two different minerals. They observe that the mineral can be scratched by corundum, topaz, and quartz, but it cannot be scratched by gypsum, calcite, or fluorite. answer choices. What is its approximate hardness? 60 seconds . the answer is. Mineral; 3: Calcite: 4: Fluorite: 5: Apatite: 6: Orthoclase feldspar: What mineral can scratch feldspar but not quartz? This is a yellow, metallic mineral that leaves a green/black streak. Quartz is a 7. color and type of luster. Quartz, copper, fluorite, and talc are all minerals. steel file = 7.5 (can scratch talc, gypsum, calcite, fluo- rite, apatite, orthoclase and quartz but not topaz.) What mineral Cannot scratch glass? Fluorite is one….Mohs Hardness Scale. You can easily test for hardness. Report an issue. 10. answer choices. Quartz crystals rank as 7 on the Mohs scale. Calcite is a harder mineral than corundum. answer choices . Mohs Hardness Scale. Only talc will scratch quartz. It can scratch fluorite but not quartz. What is the hardest known mineral? 1. Report an issue. With a Mohs scale, anyone can test an unknown mineral for its hardness. Therefore, a piece of quartz crystal will scratch a piece of glass. »More detailed Tags . Using this scale, which mineral can scratch fluorite? It can be scratched by topaz, corundum, and diamond. It can make the identification process much simpler by considerably narrowing a search. A minerals rating on the hardness scale is determined by a scratch test. Terminology. topaz, but cannot scratch fluorite. Only talc will scratch quartz. What mineral is harder than calcite but won't scratch glass? The crystal shape and type of cleavage of these two minerals are determined mainly by the minerals'. Hardness - Geology - rocks and minerals. Quartz is a 7. Report an issue. 1.5. Additionally if a penny can scratch a mineral it charges a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and metal file 6.5. Cleavage and Fracture mineral Mohs hardness observations on the minerals; fluorite: 4: very easily scratched with a knife but not as easily as calcite: apatite: 5: scratched with a knife with difficulty: orthoclase: 6: cannot be scratched with a knife, but scratches glass with difficulty: quartz: 7: scratches glass easily There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, feldspar, quartz, topaz, corundum, and for last and hardest, diamond. Quartz is a 7. Science; Earth Sciences; Earth Sciences questions and answers; Which mineral will scratch fluorite but not feldspar? Calcite . Your unknown mineral scratches fluorite and calcite, but it cannot scratch orthoclase. 30 seconds. Which minerals can scratch quartz? Also know, why is the hardness of a mineral important? What is the 6th mineral on the MOHs hardness scale. b. streak plate d. glass. A minerals rating on the hardness scale is determined by a scratch test. 1) graphite 2) calcite 3)olivine 4) dolomite 28.Which mineral will scratch fluorite, galena, and pyroxene? (Will not scratch glass but will scratch steel blades, copper coins & fingernails.) Each mineral can scratch only those below it on the scale. The most common purple minerals are amethyst, a variety of quartz, and purple fluorite. Hematite can scratch glass but not a steel file. Minerals usually have a shape and color that is the same, and . The minerals talc, muscovite mica and quartz are similar because they. Gypsum 3. Topaz and diamond will scratch quartz. diamond What mineral can scratch fluorite? A mineral with a hardness of 7 can scratch -. Does fluorite grow with quartz? Talc . Quartz will scratch minerals that have a lower number on the scale. Quartz. For example the diamond is the hardest mineral because no other mineral on the scale is able to scratch it. Friedrich Mohs (1773-1839), a German mineralogist, assigned arbitrary relative numbers to ten common minerals in order of their hardness. b. fluorite d. calcite. Therefore, you are able to conclude that the specimen has a relative hardness between 3.0 and 5.5. Tastes like salt. 5 or 6 on the hardness scale. Fluorite will scratch calcite, gypsum and talc, listed in descending order on the scale. SURVEY . Note that no other mineral can scratch diamond. 8. What five 5 minerals can scratch a glass plate on Mohs scale of hardness? If the two specimens are equal in hardness then they will be relatively ineffective at scratching one another. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. SURVEY. answer choices. 120 seconds. Quartz is a 7. Answer and Explanation: Objects that can scratch feldspar but not quartz would be those rated as a 7 on the Mohs hardness scale. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. One must also use enough force to create the scratch (if you don't use enough force even diamond will not be able to scratch quartz - this is an area where practice is important). Scientists have calculated that wurtzite boron nitride and lonsdaleite (hexagonal diamond) both have greater indentation strengths than diamond. Rocks can have fossils, but minerals can not. Suppose you had a piece of pure gold. Hardness is a measure of a mineral's resistant to abrasion. There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, feldspar, quartz, topaz, corundum, and for last and hardest, diamond. The minerals from Mohs Scale that fall into that relative hardness range are calcite (H=3), fluorite (H=4) and apatite . Quartz is harder and will always scratch fluorite. What mineral is harder than diamond? Fluorite is one. Answer (1 of 2): Apatite, orthoclase feldspar, quartz, topaz, corundum, and diamond, in ascending order of hardness on Moh's Scale. Q. Answer (1 of 2): On the Mohs hardness scale glass is 5 to 5.5 and quartz is 7, so anything that has a hardness from 5 to 6.5, more or less, will be what you are looking for, such as a knife blade (5-6.5), a steel file (6.5) or Turquoise (5-6). Start with the softest standard mineral - talc. Fluorite is one. calcite, but cannot scratch apatite. 40 Questions Show answers. MINERAL PROPERTIES: HARDNESS. Furthermore, what mineral can scratch corundum? For instance quartz will be able to scratch calcite with much greater ease than you can scratch calcite with fluorite. What mineral is the hardest according to Mohs scale? What are the two types of breakage? Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5. Name 2 objects that will scratch fluorite piece of copper or fingernail 6. 29. What mineral can scratch fluorite, galena, and pyroxene? Or Rocks are made up of minerals. Quartz is a 7. The softest minerals have metallic bonds or even weaker van der Waals bonds as important components of their structure. 1) garnet 2) pyroxene 3) plagioclase feldspar 4 . 30 seconds. Hardness mineral Mohs hardness observations on the minerals talc 1 very easily scratched by the fingernail; has a greasy feel gypsum 2 can be scratched by the fingernail calcite 3 very easily scratched with a knife and just scratched with a copper coin fluorite 4 very easily scratched with a knife but not as easily as calcite. 7: Quartz (Will scratch glass, steel blades, copper coins & fingernails.) A minerals rating on the hardness scale is determined by a scratch test. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. Look at the scale below - click on the pictures to find out about each mineral. gypsum, but cannot scratch corundum. Quartz 7. What minerals can fluorite scratch? Amethyst will scratch diamond. Refer to the Mohs Hardness Scale. According to the Mohs' scale, which of the statements below is true? Students are testing the hardness of a mineral sample. There are ten minerals in Mohs scale, talc, gypsum, calcite, fluorite, apatite, feldspar, quartz, topaz, corundum, and for last and hardest, diamond. Find more answers Ask your question New questions in Science Quartz is a 7. Any mineral c. BONUS: Name the mineral that has the following properties: Non-metallic Can scratch fluorite but cannot scratch quartz Exhibits cleavage Contains the elements sodium & hydrogen * * * * * * * * * * * * * * * * * * Minerals are the ingredients of rocks. What is the strongest rock in the world? This property is easily determined and is used widely for field identification of minerals. 5. Quartz will scratch minerals that have a lower number on the scale Advertisement Still have questions? have the same hardness. 900 seconds. Which mineral will scratch . Which mineral is harder: feldspar or quartz? Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. The higher numbers are the harder minerals and the lower number are soft. A relative hardness value of 6.5 means that the mineral could scratch orthoclase (feldspar) but not quartz … Based on the table of mineral hardness, which minerals could the students have? A mineral may be crystals, but rocks are not crystals. A mineral or other material with a higher hardness number can scratch anything with an equal or lower number. Does fluorite grow with quartz? If diamond is the hardest mineral does that mean it can scratch the other minerals on the MOHs hardness scale. 5. For glass, Mohs hardness = 5.5. Rocks are made up of one or more minerals. Can gypsum scratch quartz? Mohs' scale of mineral hardness is named after Friedrich Mohs, a mineralogist.Mohs scale is ordered by hardness, determined by which minerals can scratch other minerals.. Apatite . Hardness mineral Mohs hardness observations on the minerals fluorite 4 very easily scratched with a knife but not as easily as calcite apatite 5 scratched with a knife with difficulty orthoclase 6 cannot be scratched with a knife, but scratches glass with difficulty quartz 7 scratches glass easily. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. Calcite is a harder mineral than corundum. Can Easily Scratch with Fingernail. Which object will scratch feldspar but not quartz? Hardness is generally consistent because the chemistry of minerals is generally consistent. Talc , Gypsum , Calcite , Fluorite, Apatite , Feldspar , Quartz , Topaz , Corundum , Diamond. a. glass c. iron nail. Quartz is harder and will always scratch fluorite. Mohs hardness mineral Mohs hardness other materials apatite 5 ~5.5 glass plate orthoclase 6 ~6.5 steel needle quartz 7 ~7.0 streak plate topaz 8. What is its Mohs rating? 1)Calcite 2) Pyroxene 3) Potassium Feldspar 4) Garnet 27.Which mineral bubbles when acid is placed on it? Hardness is defined by how well a substance will resist scratching by another substance. quartz . Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5. Halite 3 Directions not at 90 . The most common purple minerals are amethyst, a variety of quartz, and purple fluorite. Furthermore, can a mineral scratch itself? Since Fluorite is a 4 on the size it signifies that fluorite can scratch all of the minerals beneath it however not be scratched by them. 7.5. answer choices. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them.. Also know, what minerals can scratch gypsum? Apatite 6. Q. Mica. A relative hardness value of 6.5 means that the mineral could scratch orthoclase (feldspar) but not quartz. Fluorite 9. are the same color. Fluorite is one. Topaz and diamond will scratch quartz. 2. Hardness 2. Imagine you have an unknown mineral. Quartz Inclusions: Fluorite This mineral can scratch fluorite but not feldspar. The best we can do is say that the hardness of orthoclase . Example: You select one of the minerals from Mohs Scale that looks like the one pictured here and find that it can be scratched by the knife (H=5.5) but not by the penny (H=3). Which of the following minerals is the hardest? 120 seconds. It can be scratched by topaz, corundum, and diamond. b. steel file d. copper. Hardness plays a major role in identifying a mineral. Placing these common items in the table is important because not all minerals . Calcite 4. Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5. Colorless to white. For example the diamond is the hardest mineral because no other mineral on the scale is able to scratch it. orthoclase feldspar, but cannot scratch talc. (Can be scratched by a steel pocket knife. the steps between relative hardness values are not necessarily equal. Notes: It must be noted that Mohs' scale is arbitrary and non-linear, i.e. Will scratch a fingernail and a copper coin.) Quartz Inclusions: Fluorite What is the rating of a mineral that is scratched by a 9 but scratches orthoclase and quartz? Quartz will scratch minerals that have a lower number on the scale. Minerals' hardnesses are rated on a scale of 1-10 (Moh's scale). Which mineral can you scratch with your fingernail? You know then that the mineral's hardness is between 5 and 6. Because they can be exactly the same colour, we have to use different properties, like crystal shape and hardness to distinguish between them. Feldspar 8. Fluorite 5. Which mineral will not scratch quartz? 5. glass = 5.25 (can scratch talc, gypsum, calcite, fluorite and apatite, but not orthoclase.) the steps between relative hardness values are not necessarily equal. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. Orthoclase 7. Your unknown mineral is scratched by corundum, yet it scratches calcite. It is not apatite, but it is scratched by a 6. . 30. Scientists have calculated that wurtzite boron nitride and lonsdaleite (hexagonal diamond) both have greater indentation strengths than diamond. Any mineral with a Mohs hardness of 7 or greater could scratch quartz. 3. a. diamond c. steel file. It can be scratched by topaz, corundum, and diamond. 27. 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