Iminerals with metallic luster

10 Minerals That Have Metallic Luster

Mineral Identification | Earth Science

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Minerals with Metallic Luster

Mineral Properties Table. Minerals with Metallic Luster ( in order of decreasing hardness) Hardness Common Color(s) Streak Color Other Properties Name Composition 6-6.5 pale brass yellow greenish black, brownish black cubic crystals; concoidal to uneven fracture; SG 5.0 Pyrite

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Mineral Luster

Luster of Resin, eg. Amber. Resinous - Greasy. High index of refraction with surface alteration, eg. Sulphur. Resinous - Metallic. High index of refraction in nearly opague minerals. Schiller. Caused by numerous platy inclusions or separations.

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Week 1 Minerals Worksheet & Questions

Joseph Pires GO141 Park University 1. Identify the mineral with metallic luster, yellowish color, hardness 6.5, with no cleavage, a greenish streak, and cubic crystal form. Answer: Pyrite 2. What is the mineral with metallic luster, gray color, cubic cleavage and crystal form, H 2.5? Answer: Galena 3. Name at least 3 minerals that are elements.

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Which minerals have a metallic luster?

A metallic luster resembles metal, therefore the surface is shiny. A submetallic is less shiny than the metallic and a nonmetallic is very dull. Halite has a vitreous luster that gives it a brilliant, glassy look. Does feldspar have a metallic luster? Minerals that are opaque and shiny, such as pyrite, have a metallic luster. Minerals such as ...

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Minerals: Luster | The Happy Scientist

At first, many people find luster a bit confusing. Luster is the way that an object reflects light, and although the different types of luster can be difficult to describe, your daily experience makes them easy to recognize. Once you understand luster, you will recognize the common lusters instantly. Metallic Luster The first step to identifying a specimen is to decide if it

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Mineral Gallery: LUSTER

Metallic Luster: Luster is a description of the way light interacts with the surface of a crystal. This is how you would tell someone how a mineral looks. It has nothing to do with color or shape, but is related to transparency, surface conditions, crystal habit and index of refraction.

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Mineral Identification Tables

 · Minerals of Non-Metallic Luster; Minerals having a doubtful luster will be found in both classes. The search has now been restricted to one of these two classes. In the metallic-luster class, the search is further narrowed by determining the color of the specimen; and in the non-metallic luster class, the color of the powder makes two divisions.

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Mineral Identification Key

Luster usually resinous to vitreous, but when resinous may appear sub-metallic, may contain some U and be radioactive: 5 to 5½: Brown to Black or Dark yellowish-brown: Light-brown to Yellowish-brown : PYROCHLORE (Na,Ca) 2 Nb 2 O 6 (OH,F)·nH 2 O: Isometric: Usually massive, granular, crystals usually octahedral, modified by the cube: 4.45-4.90

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Minerals with Metallic Luster ( in order of decreasing ...

Mineral Properties Table. Minerals with Metallic Luster ( in order of decreasing hardness) Hardness Common Color(s) Streak Color Other Properties Name Composition 6-6.5 pale brass yellow greenish black, brownish black cubic crystals; concoidal to uneven fracture; SG 5.0 Pyrite

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Luster of Minerals

Minerals possessing metallic luster are opaque and very reflective, possessing a high absorptive index. This type of luster indicates the presence of metallic bonding within the crystal lattice of the material. Examples of minerals which exhibit metallic luster are native copper, gold, and silver, galena, pyrite, and chalcopyrite.

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Mineral Identification | Earth Science

Luster describes the reflection of light off a mineral''s surface. Mineralogists have special terms to describe luster. One simple way to classify luster is based on whether the mineral is metallic or non-metallic. Minerals that are opaque and shiny, such as pyrite, have a metallic luster. Minerals such as quartz have a non-metallic luster.

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GeoMan''s Mineral Identification: Non-metallic, H.<2.5

1. Good cleavage in 1 direction. White, green, pink. 2.7. Easily scratched with fingernail. Flexible but not elastic; foliated; slick or soapy feeling. Typical luster: pearly to waxy. Used on most baby''s butts, and in paints, ceramics, rubber, insecticides, and paper. Variety SOAPSTONE can be carved into ornamental shapes and items.

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Mineral Identification Tables

Mixture of rust-like iron oxides. Mostly mineral "goethite." Earthy to metallic luster. Stalactitic, botryoidal forms common. Hematite: 5.5 - 6.5: Steel-gray to reddish brown: reddish brown: NO: Fe 2 O 3: Most common iron mineral; specular hematite variety is composed of fine silvery flakes: Magnetite: 5.5 - 6.5: Black: black: NO (but sometimes ...

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Lab 9

non-metallic luster. A mineral with a metallic luster is either shiny, because it reflects light like a polished piece of metal, or is dull- looking, because it reflects light like a metal rust or a metal tarnish. All other minerals that do not reflect light like some form of metal are said to be non-

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Non-Metallic Minerals by Density

Non-Metallic Minerals listed by density. Mineral Count - Density Summary Rounded to Nearest Integer: 17-(1 gm/cc) 634-(2 gm/cc) 1307-(3 gm/cc) 676-(4 gm/cc) 204-(5 gm/cc) 148-(6 gm/cc) 111-(7 gm/cc) 37-(8 gm/cc) 7-(9 gm/cc) 6-(10 gm/cc) 1-(11 gm/cc) 26-( gm/cc) Mineral Name

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2.5: Luster

 · In an introductory course, luster is a described as a property of light reflection that separates metallic from non-metallic minerals. Determining luster can be difficult for a beginner. A dark colored sample of weathered magnetite (metallic luster) might be mistaken for an earthy sample of hematite (non-metallic luster), but these two will ...

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1. METALLIC TO SUBMETALLIC MINERALS

1. METALLIC TO SUBMETALLIC MINERALS FRACTURE STREAK COLOR HARDNESS FRACTURE LUSTER DIAPHANEITY OTHER SPECIFIC MINERAL CLEAVAGE CLEAVAGE PROPERTIES GRAVITY NAME yellow yellow, one silky, or brown, 5 - 5.5 direction submetallic translucent fibrous 3.3 …

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Luster: Mineral Properties

How to use luster as an identification mark. It is in the eyes of the viewer to determine what luster a particular specimen exhibits. Luster is only a useful form of mineral identification when the specimen in question displays a unique luster, such as waxy, greasy, pearly, etc. Specimens with a vitreous luster cannot be distinguished from one another, nor can minerals with a metallic luster.

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3 How did minerals with metallic luster differ from those ...

3. How did minerals with metallic luster differ from those without metallic luster? The metallic minerals had a much greater density than all of the non-metallic minerals. They also had darker streaks on the streak plate. 4. Classify the minerals into several groups based on observations. Grouping the minerals based on appearance, I would put ...

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Minerals with Metallic Luster Hardness Streak Cleavage ...

Minerals with Metallic Luster Hardness Streak Cleavage Specific Gravity Other Properties Mineral Chemical Composition 1 - 5.5 Yellowish-brown None 3.5 - 4 Massive, coatings, botryoidal crusts, earthy masses. Yellow, brown, black color. Limonite Hydrous iron oxides 2.5 Dark gray None. Conchoidal fracture. 5.7 Massive. Crystals are rare.

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Luster: The light-reflecting qualities of a mineral.

Most metallic minerals have a color similar to native metals such as gold, silver, or copper. Just because a specimen is highly reflective does not give it a metallic luster. It must also be opaque and exhibit the color of a metal. Opacity is an important part of a metallic luster. Light enters specimens that are transparent or translucent.

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Mineral Properties

Metallic: Softer than glass: 3 perfect cleavages at 90 degrees, high density. Hematite: Metallic or non-metallic luster: Hard to tell, but harder: Red-brown streak. Hornblende: Non-metallic (black) Harder than glass: Usually black or dark green; 2 cleavages at 60°/120° (56°/124°) Biotite: Non-metallic (black) Slightly harder than glass

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Minerals with Metallic Luster Flashcards | Quizlet

Minerals with Metallic Luster study guide by ARMAGEDONjk includes 5 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades.

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Minerals Harder Than Glass

Metallic Luster Non-Metallic Luster Good Streak 1 Minerals Harder Than Glass No Cleavage Cleavage Not Obvious? ?? ? Do not confuse crystal growth shape with cleavage! Many crystals with good shapes do not cleave SPECULAR HEMATITE MAGNE-TITE PYRITE ORTHOCLASE MICROCLINE CALCIC PLAGIOCLASE AMPHIBOLE PYROXENE QUARTZ OLIVINE PYROXENE …

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Mineral Identification Key Mineral Properties & Luster

Luster: A mineral''s luster is the overall sheen of its surface – it may have the sheen of polished metal, or that of an unpolished metal that is pitted by weathering – or it may have the sheen of glass, or look dull or earthy, etc. Luster should not be confused with color: A brass-yellow pyrite crystal has a metallic luster, but so does a ...

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METALLIC LUSTER V, H Copper

GY 111 mineral catalog grouped according to luster, streak, hardness and cleavage. Minerals that display significant variation in properties ... NON-METALLIC LUSTER (LIGHT COLORED) S Bauxite Softer than Glass No Cleavage White color, occasionally mottled with red stain. H=1 - 2. S.G.=2.6.

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GeoMan''s Mineral Identification: Non-metallic, H.2.5 to 3.5

The crystalline (metallic and sub-metallic) varieties are generally harder than the earthy (non-metallic) varieties. An ore of iron. HEMATITE: 2-3: Wavy, uneven fracture: Green and white: 2.5: Platy or fibrous; waxy luster when massive, satiny luster when fibrous (asbestos variety).

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10 Minerals That Have Metallic Luster

 · Luster, the way a mineral reflects light, is the first thing to observe in a mineral. Luster can be bright or dull, but the most basic division among the various types of luster is this: Does it look like a metal or not?The metallic-looking minerals are a relatively small and distinctive group, worth mastering before you approach the nonmetallic minerals.

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Minerals_Identification_Lab.docx

Luster Luster describes how light reflects from a surface. When studying minerals, there are two broad classifications of luster – metallic and non-metallic. The mineral identification tables in this lab are sorted first by luster. Metallic lusters include both metallic (such as galena) and submetallic (such as magnetite) luster.

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