Mohs Hardness Scale Worksheet Pdf – ** Stone is a collection of one or more minerals ** 3. Hardness: a measure of resistance to scratches. It ranges from 1 to 10 on the Mohs scale.
Download “** A stone is an aggregate of one or more minerals ** 3. Hardness: A measure of resistance to scratching. It ranges from 1 to 10 on the Mohs scale.
Mohs Hardness Scale Worksheet Pdf
1 Lab 2: Minerals Lab Notes. Minerals are solid organic inorganic substances with a specific chemical composition, different physical properties and crystal structure. Chemical compounds are the chemical elements that make up each mineral. An example of quartz is silicon dioxide SiO 2. Galena is a lead mineral and its chemical formula is PbS sulfite. Calcite, used as an antacid and in fertilizers, is calcium carbonate CaCO 3. Quantitative properties that are a good aid to identification. Clean sampling is required for correct determination. Lunar minerals generally have densities greater than 2 grams per cubic centimeter, and at most more than 22 grams per cubic centimeter. Cleavage is a smooth separation that leads to a smooth surface. A fracture is a break that causes a curve. 3. Hardness: a measure of scratch resistance. On the Mohs scale, it ranges from one color to another: in general, if a mineral sample is the same color, it is probably all the same mineral. Different colors in the same sample may indicate the presence of minerals that commonly occur together and may aid in identification. 5. Line: Color of the substance after grinding into a fine powder. 6. Luster: A description of how the surface of a material reflects light on a fresh surface, whether non-metallic or metallic, and is often modified by other descriptive terms (eg grease, glass, wax). 7. Diagnosis: Characteristics that can distinguish a particular mineral and distinguish it from other minerals (eg magnetism, acid reflux, UV light, crystal morphology, whether the mineral is formed into fine crystals, etc.).
Chapter 2 Pt Ii (matter & Minerals)
2 Mohs scale Mohs hardness Minerals 1 talc 2 gypsum 3 calcite 4 fluorite 5 apatite 6 potassium feldspar 7 quartz 8 topaz 9 corundum 10 diamond Common objects have the following Mohs hardness: Nails 2.5 napper 5 napper 2.5. Knife 5.5 Plate 6.5 We will learn about some of the key minerals that make up stone. These are the minerals that make up the crust of the earth’s crust. Among them are quartz, potassium feldspars, plagioclase feldspars, biotite and muscovite, amphiboles, pyroxenes and olivine. Other minerals have been added to this list: garnet, calcite, pyrite, gypsum, hematite and magnetite. There is a summary for each mineral on the next page.
3 Summary of minerals that form some common rocks Density, g / cm3 crack / quartz 2.65 Potassium feldspar Plagioclase Feldspar fills at almost complete levels near 90 complete biotite complete muscovite complete amphibole (hornblende) at 60 and near 602 (augite ) Up to 90 olivine no , garnet no, rhombohedral calcite hardness (Mohs) 7 colorless, white, brown, pink. Purple 6 White Pink Gray Green 6 White Gray Colorless Other criteria White Non-metallic 1 Non-metallic white Normal with almost parallel fibers White Non-metallic Very thin Line perfect in some areas Brown to white, non-metallic, easy to cut, black from dark green to light brown, non-metallic, easy is cut 5-6, dark green, white to black, non-metallic, dark corners from white and dark brown, 5-6 dark black to non-metallic green off-white corner and brown, yellow, dark green, non-metallic, red, green, olive, brown, red , white, non-metallic, yellow, black, solid green, 3 white, gray, pink, yellow, yellow Pyrite 5.0 No brass Yellow gypsum 1 Complete 2 Colorless, white, gray hematite to red brown coarse to gray, hematite associated with metals on coarse Magnetite no. 6 silver gray to black white non-metallic hardness, acid response: gloss Dark gray metallic, color hardness pattern # Solid white, non-metallic 12, red-brown or 13 colors, non-metallic, dark gray, metallic or non-metallic magnets! 14
4 EES LABORATORY FOR DYNAMIC EARTH Lab 2. Minerals Name: Sec. We will take some time to learn about the minerals that make up rocks. Some properties such as hardness, density and properties are more useful than others. Color, contrast and brightness are less important, but can be useful in some cases. 1. How can you tell plagioclase feldspar from potassium feldspar? 2. How can you distinguish biotite from amphibole (hornblende)? 3. Now test your hands on 4 samples of unknown minerals (U-1, U-2, U-3 and U-4). For each alien, list the features you used to identify them, then try your best to model the mineral name: U-1 U-2 U-3 U-4
5 Now to the agenda: 4. Because of your hands-on lab-based gold mining expertise, last week you and your team were hired as geologists and asked to dig up some iron ore samples to assess what the investigation yielded. For evaluation. You have a well-balanced laboratory (scale) as well as the possibility of hardness testing. Researcher Al (a lunatic in a Hawaiian shirt and black socks) says he claims to have made 200 of these items. Let’s look at the table below and determine which ore (U-5) he actually installed. Is he rich now? How much can he expect? Remember “# $%!” =! “##! Density is shown in all your calculations below. Density, g / cm 3 Cut / Gold 19.3 Nothing, Flexible! pyrite 5.02 marcasite 4.9 pyrrhotite hardness (Mohs) vein color Other criteria brassy yellow often green shade 4 bronze greenish brown golden greenish green brassy greenish-or yellow-brown black and greenish white $ 50.00 / 00 / gram. Black and white / 100 Golden yellow chalcopyrite, often green, black and white $250.00 / 100
Solved] The Identification Of Other Common Minerals Activity 2…
6 Density setting: To do this, fill the container with water about ¾ and leave it. Now open the scale and see if it reads 0.00 and when hot it should read g in the upper right corner of the reading field. If g is not displayed, press the mode key to display it. Place a sample on it and get its mass. This quantity is in grams. In the next step, place a container filled with water up to ¾ of its volume. Press the ZAR key, a reading should be displayed. Using the attached thread, make a slip and attach the pattern to it. Now suspend the sample in the water and make sure it is completely submerged. Do not let it touch the bottom or sides of the glass. Note the numbers on the reading. This is the amount of water the sample has changed! Since the density of water is 1.00 g / cm3, the displaced volume is the same numerical value, but expressed in cm3. Divide the mass of the sample by the volume to get the density of the sample in grams per cubic centimeter. Open the scale until it reads 0. Sample weight.
Objectives: Laboratory 2: Properties and identification of minerals 1) Know the main properties of mineral identification. 2) Learn how to determine the minerals that make up normal rock. Primary
Identifying the minerals that make up rocks – Sean Tulia – Minerals are the natural substances that make up every mineral on the planet. They are the basis of our planet and most of them.
Mineral ID Name Notes Page Objectives Explain what properties of minerals are most important for identification. Explain how to identify a mineral based on its properties. Classification of some common minerals
Meet The Rocks
Name: Class: Date: Multiple Choice Choose the letter of choice that best completes the sentence or best answers the question.
Class: Date: Modified / False The Mineral Study Guide determines whether a sentence or phrase is true or false. If incorrect, change the word or phrase shown to make the sentence or phrase correct.
Mineral identification methods: 1. Separate metallic / earth ores from non-metallic ores. If you are not sure how bright this mineral is, then it is probably not metallic. A. Earth and metal
Earth Science 110 Introduction to Geology DR. WOLTEMADE: Section: Introduction to Minerals and Rocks Laboratory Identifying minerals and rocks is an important part of understanding our body.
Lab 1 Answers
All mineral identification consists of minerals. Stones come in different colors, textures and shapes. Some rocks or minerals are very hard. Some are soft. A gemstone is a rare mineral
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