Advantages And Disadvantages Of Pyrite

Jade Stones “nephrite” are a mineral composed of magnesium, iron, and silicate of calcium. Usually, they are formed through extreme heat and pressure known as metamorphism. Surprisingly, it can be found on every continent in the world, including countries like New Zealand, Brazil, China (Sinkiang), Canada, Zimbabwe, and the United State. It can be found in serpentine rock, by mining, alongside riverbanks, and seashores. Due to its composition these stones are shaped and polished before it is used in massage ("Nephrite Jade Gemstone Information", 2014).

8. To some observers, the mineral shown in Figure 1.6 (p. 5 lab book) exhibits a metallic luster, while others describe its luster as nonmetallic. Based on the streak of this sample, how would you describe its luster? Luster: nonmetallic

Next, we can see that the rock displays a subtle porphyritic texture with plagioclase comprising the phenocrysts. The overall texture of the surrounding groundmass is granoblastic equigranular. Under thin section we also see a weakly defined foliation evidenced in the preferential alignment of actinolite grains and to a lesser extent chlorite grains. Undulose extinction is also observed in quartz indicating the rock was subject to deformation. The normalized quartz, alkali-feldspar, and plagioclase (QAP) values of this rock indicate that it is classified as a grano-diorite according to the IUGS QAPF classification system which is consistent with the hand sample interpretation.

Amethyst is purple quartz; the color is caused by iron (Fe4+) impurities. Azurite is a copper mineral. Calcite is a very common and widespread mineral and has highly variable forms and colors. Lodestone is a natural magnet. Mica is a sheet silicate. Rose quartz is translucent and a variety of the silica mineral quartz, found in pegmatite. Talc almost always found in foliated masses in metamorphic rocks with many carbonate minerals. Pyrite is a very common mineral. The brassy-yellow metallic color of pyrite has lead people to mistaking it for Gold, so its common nickname is

3. The only deposits of a rare and sought after mineral known as Yuksporite are

Mineral |Crystal shape |Color |Density |Hardness |Streak |Fizzes in acid? | |Galena (lead ore) |Cubic/ irregular |Gray |7.5 g/mL |3 |Dark gray |No | |Gold |Irregular |Golden yellow |19.3 g/mL |3 |Yellow |No | |Graphite (pencil lead) |Irregular |Dark gray |2.2 g/mL |2 |Gray |No | |Hematite (iron ore) |Irregular |Red-brown to black |5.3

The main use for this mineral is for jewelry because of its shiny blue and violet appearance. “Although Benitoite is a valuable and exquisite gemstone, its hardness as a gemstone is relatively

oxygen, which lead to oxidation of Copper. Through all that, the red powder completed combustion and we determined that the

The first reaction involves pyrite rock reacting with oxygen (air) and water to produce dissolved ferrous iron, sulfate, and acidity. The second reaction oxidizes the dissolved ferrous iron in acidic conditions and produces ferric iron and water. The third reaction involves the hydrolysis of the ferric iron to form ferric hydroxide and more acid. The ferric hydroxide is the orangey-red colored solid you see in the water (Juniata College).

Defining a mineral by color is not the most sophisticated method, due to many minerals hold the same color. Also, different imperfections can show different colors within the mineral. Only using color can be difficult to identify a mineral, but when using a combination of shape and hardness one has the ability to narrow down choices. If a mineral reflects light from a surface it is said to have luster, however it does not reflect light such as silver or copper does it would be called glassy, pearly and dull.

This experiment initially involved the synthesis of an iron (III) oxalate complex with the general

An unknown material can be determined by using simple chemical tests and separations which is called as inorganic qualitative analysis. The separation of cations depends on the difference in their propensity to form precipitates. Separation scheme is used to classify cation into five groups on the basis of their physical and chemical behavior opposed to some reagents. Classification is based on whether there is formation of precipitates or not when metal cations react with the reagent. The five groups of cations and the characteristics of these groups are as follows:

Iron is an important element to the scientific community, especially those involved in the branch of chemistry. Consequently, humans rely on iron for many different things. Iron is diverse from all other elements with regards to its natural occurrence, historic and contemporary uses, the origin of its name, and when, how, where, and by whom it was discovered. It also has unique characteristic physical and chemical properties. Without the discovery, and distinctive properties of iron, life on Earth would never be the same as it is now.

Part 3 of the experiment utilized Spectrophotometry to determine the iron content in the iron (III) oxalate complex. The results were combined with findings from Part 1 and

Looking back at this discovery it amazes me. Something that primitive people were able to discover became such a great deal to the world. we use iron in building so many things. It is the main component of steel (which is iron that is enriched with carbon) and steel is used for skyscrapers, high tension cables, automobile frames and so much more. Here on earth we have a very abundant supply as well, the earth is