I am 100% sure it would be Pyrite because it does meet all the qualification of Talc.…
Mafic: Igneous rocks that are rich in dark Plagioclase feldspar, pyroxene and that are dark in their color.…
11. Use the mineral identification key (Fig. 1.24) to identify a mineral that is nonmetallic, dark colored, harder than glass, lacks cleavage, and is green in color. __________________________…
I am almost sure that this mineral is pyrite because it is gold and has a black streak. The only thinks that do not match up is the specific…
The material on the right, the gneiss – looks quite different to the peridotite. That would suggest that we may have different minerals – and different minerals mean different environment and or/different processes. The gneiss is a metamorphosed rock – so a rock that has been transformed from its original form due to heat and or pressure. Gneiss makes up most of earths lower crust – the pressure and heat transforms sedimentary and igneous rocks.…
Metal is responsible for the colour produced in the flame test for that salt. All salts contain chloride ion. If non-metal ion, chloride, is responsible for the colour, all colour produced will be the same.…
The first metal to be extracted from an ore was copper. This occurred in the Middle East in about 6000 B.C. Copper oxide was heated with charcoal (mainly carbon) and globules of copper resulted. This copper was used to make domestic utensils and possible some types of ornaments. Working copper, however, was difficult as the melting point needed was too great for wood fires to achieve. Furthermore, the finished…
When given the list of the minerals available to research for our first project, there weren’t many options left since I had missed the first day and of course I was in the last table to get the sign up sheet. I wondered why among all the options available, no one had chosen thallium, an element that seemed so mysterious to me. It was an easy decision, and maybe it sounds nerdy, but I was genuinely curious about what this metal really was.…
Many researchers have conducted studies in order to evaluate the influence of the electrochemical potential on the surface properties of pyrite leading to its depression. For example, Hicyilmaz et al. measured contact angles of pyrite in the absence of collector in a potential range of -505 to +595 mV vs. SHE. and observed that with increasing the pulp potential from +400 to +595 mV vs. SHE, the contact angles decreased. Also in another study conducted by Guler et al., it was revealed that the floatability of pyrite in the collectorless conditions decreased with a significant increase in the electrochemical potential. The decrease in the contact angles and the floatability of pyrite with increasing the pulp potential was found to be due to…
Asbestos fibrous silicate minerals are divided into two groups or classes, serpentine and amphibole. The silicate tetrahedron (SiO4) is the basic chemical unit of all silicate minerals (Hurlbut & Klein, 1977). The number of tetrahedra in the crystal structure and how they are arranged determine how a silicate mineral is classified (Hurlbut & Klein, 1977). Serpentine (chrysotile or white asbestos) is the most commonly used type of asbestos and amphiboles, which include crocidolite (blue asbestos), amosite (brown asbestos), tremolite, actinolite and anthophyllite (Roggli & Coin,…
The valuable minerals found are often associated with the magma. The rising magma from the volcano does not always reach the surface to erupt, instead, it will slowly cool down and harden to form different types of rocks.…
But what exactly is a meteorite? Meteorites are pieces of natural materials made out of iron or rocks that fall into the earth. Most come from the asteroid belt between the planets Mars and Jupiter. Some are fragments of other planets. These “rocks” are predominantly composed of iron or nickel. They are thought to be remnants of our old Solar System, which drift in space until they collide or drift in a large gravitational body such as our planet. They burn up when they enter our atmosphere due to friction.…
Meteorites are small extraterrestrial bodies that reach the Earth 's surface. They are small asteroids, approximately boulder-sized or less. While still in space these bodies are called meteoroids. When they enter the Earth 's atmosphere, but before reaching the surface, they are called meteors.…
Panning for gold often results in finding pyrite, nicknamed fool's gold, which reflects substantially more light than authentic gold does. Gold in its raw form appears dull and does not glitter.…
Limestone: Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera. It is found in Abia, Akwa Ibom, Anambra, Crossriver, and Ebonyi States. Limestone is a rock with an enormous diversity of uses. It could be the one rock that is used in more ways than any other. Most limestone is crushed and used as a construction material. It is used as a crushed stone for road base and railroad ballast. It is used as an aggregate in concrete. It is fired in a kiln with crushed shale to make cement.…