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Describe why color and streak are useful in identifying pyrite?
Wiki User
∙ 14y ago
Pyrite's color is extremely similar to that of gold. However, the streak of pyrite is black. This can be used to distinguish it from gold.
Wiki User
∙ 14y ago
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Which mineral properties are most useful for identification?
Hardness and streak color are very important. The color of the mineral helps some, as well.
How do you clean iron pyrite?
Gold won't dissolve in acid wheras pyrite will. That 'separates' them - but not too useful if its not the gold you want or you want both. If telling them apart is what you want then their density is different, their structure is different (crystalline mineral - pyrite) and their hardness is different.
Why are streak tests used?
Streak tests are used to identify minerals. Rubbing a mineral specimen against unglazed white porcelain, or finely powdering it and examining the powder against a white background, is a useful diagnostic test in some cases. Eg. hematite, a black mineral that looks much like many other black minerals, has a distinctive red streak.
What are some useful rocks and minerals?
Examples: uraninite, feldspar, caolin, talc, quartz, ruby, garnets, marble, limestone, granit, asbestos, magnetite, halite, sylvite, pyrite, coal, andesite, dacite, topaz etc.
List two similarities between a criterion reference test and norm referenced test?
Norma Reference Measurement and Reference Measurement Criteria generally is the most useful frame of reference to describe the level of knowledge and performance of students.
Which physical property would be the most useful in identifying a sample of galena?
streak
What property is the least useful in identifying minerals?
there are a few : hardness, luster, cleavage, streak, color, and density. there are more but i don't know them off the top of my head.
What properties are least useful in identifying a mineral?
Color and streak would be the least useful, because they may be shared by a multitude of other minerals.
What two properties are least useful in identifying a mineral?
Color and streak would be the least useful, because they may be shared by a multitude of other minerals.
Why is mineral's streak more useful in identifying a mineral than its color?
Because color can vary based on the purity of the mineral.
Which of the following characteristics is least useful in identifying a mineral?
habit, color, streak, luster, density, hardness, cleavage, fracture, tenacity
The most useful physical properties for identifying minerals are?
either color, cleavage, and crystal form or crystal form, cleavage, and streak
How is Pyrite useful?
You throw it at someone
Why Is Streak A Useful Property For Identifying Minerals?
The streak of a mineral is much more accurate in identifying a mineral than color. The streak of a mineral can distinguish minerals with metallic and non-metallic luster. For example, metallic minerals generally have a dark streak whereas non-metallic luster minerals often have a light colored streak.
What is the most reliable clue in identifying a mineral?
hardness, luster, cleavage and fracture, color (not quite useful) and streak
Why is streak more reliable than color when identifying a mineral?
The streak is the mineral in a powdered form from abrasion with the hard, slightly textured surface of an unglazed porcelain streak plate. The streak color may differ from the color observed in a specimen. Coloration of mineral specimens is sometimes due to impurities. In a powdered form, the impurities are not abundant enough to cause coloration in the streak, thus revealing the true color of the mineral. == ==
If a mineral has no streak is it metallic?
When identifying minerals, having no streak is a property of hardness. A streak plate has a hardness of ~7(Moh's Scale). Thus any mineral having a hardness greater than 7 will have no streak.Metallic is the description of luster. Or the general appearance of a mineral surface in reflected light.If you were refering to the mineral having metal elements in it, streak is actually very useful for identifying them. Many minerals that are composed of non-metals have a white streak which can appear to be no streak, however there are also many minerals with no streak which are composed of non-metallic minerals (Diamond).
