WebLimestone and most shells contain calcite. (Can be scratched by a steel pocket knife or sometimes a copper coin. Will scratch a fingernail, may scratch a copper coin.) 4: Fluorite: ... If the specimen does not scratch with a penny, try a knife blade or glass. A diamond can only be scratched by another diamond. WebIf the calcite scratches the penny, it must be harder, but if the penny scratches the calcite, it must be harder, right? No, if they scratch each other that means that they have the same hardness. You will see the same thing if you try to scratch one penny with another, or if you try scratching one piece of calcite with another.
Would calcite be scratched by a penny? - Answers
WebMohs Hardness Kit: A Mohs Hardness Scale kit containing: (1) talc; (2) gypsum; (3) calcite; (4) fluorite; (5) apatite; (6) orthoclase; (7) quartz; (8) topaz; and (9) corundum. Diamond (10) is not included in most kits to … WebFeb 16, 2024 · Can calcite be scratched with glass? With a hardness of 3, calcite is softer than glass (5.5), so it does not leave a scratch. What is harder than a penny? So, a … dash rentals
How to Perform the Mohs Hardness Test - ThoughtCo
WebFeb 16, 2024 · Can a penny scratch calcite? A mineral or other material with a higher hardness number can scratch anything with an equal or lower number. Thus, a copper penny can scratch calcite, gypsum and talc, while a fingernail can scratch only gypsum and talc. Which material is harder calcite or a copper penny? Hardness Can calcite be … WebMay 23, 2024 · Try scratching the penny with the calcite. Can a penny scratch fluorite? 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. Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5 ... WebAug 26, 2024 · Can calcite be scratched by a penny? no. ... What minerals can be scratched by penny? nickel. What is pyrite scratch? It can be scratched by a … dash rentals corpus