Lab Report Hypothesis

    C.grains of sand-sized particles.     D.gypsum.   Answer Key: A   Feedback: The correct answer is A. silica.     Question 19 of 33 3.03/ 3.0303 Points Which of the following is a diagnostic feature of Specimen #16?

What type of minerals are in granite? The minerals that are in granite are Feldspar, Hornblende, Mica, Quartz, and Magnetite. These minerals are in granite because of their color, hardness, streak, luster and their break. These properties are helpful for identifying if the mineral is a part of granite or if it not a part of granite.

Quartz is the most abundant single mineral on earth. It makes up about 12% of the earth's crust, occurring in a wide variety of igneous, metamorphic and sedimentary rocks.Quartz varieties are commonly separated into two groups based on the size of the individual grains or crystals. Macrocrystalline quartz in which individual crystals are distinguishable with the naked eye, and cryptocrystalline quartz in which the individual crystals are too small to be easily distinguishable under the light microscope. Some of the verities of the Macrocrystalline quartz are

10. The minerals shown in Figure 1.12 (p. 7 lab book) are fluorite and topaz that have been tested for hardness. Use the Mohs scale in Figure 1.11 (p. 7 lab book) to identify which is fluorite and which is topaz.

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

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

51. Building stones, including large stones, coarse gravel, and fine sand, account for 90 percent of nonmetallic mineral extraction.

The color of a mineral when it is powdered is called the streak of the mineral.

Minerals are said to have a different level of hardness, this means that some of the minerals are softer compared to others. Certain Minerals have the ability to be scratched or left marks in as with others one cannot mark in the surface

Gypsum is the most common sulfate and has extensive deposits and found through the world. Main locations of gypsum mines are within the United States (in California, Iowa, New York, Texas, and Oklahoma), Candida, Spain, Thailand and Iran. One un-noted location within in the United States is New Mexico where White Sand dunes are frequent due to the crystal origins in mines within Mexico which wind blows particles into New Mexico. Gypsum are mainly found in sedimentary rocks and are usually the first to be deposited due to it crystalizing from evaporation of saltwater (waters that are usually high in calcium and sulfates). It also commonly occurs interstratified through limestones and stales. If gypsum recrystallizes in veins, satin spar is then

14) Which one of the following minerals has the greatest hardness on the Mohs hardness scale? A) Feldspar B) calcite C) gypsum D) topaz 15) Which of the following best defines a mineral and a rock? A) A rock has an orderly, repetitive, geometric, internal arrangement of minerals; a mineral is a lithified or consolidated aggregate of rocks. B) A mineral consists of its constituent atoms arranged in a geometrically repetitive structure; in a rock, the atoms are randomly bonded without any geometric pattern. C) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of minerals. D) A rock consists of atoms bonded in a regular,

Both Waverly and June have rough, abrasive

Using our qualitative observations, we saw that as the height the marble was dropped from increased, the sand and orange powder in the tray reacted more, meaning that it was being hit with more force. By “reacted”, we mean that when the marble hit the sand, some of the sand around the marble sprang up in the air. With our second hypothesis, we dropped 3 different sizes of glass marbles each from a height of 40 cm. From smallest to largest, the average widths were 2.8 cm, 3 cm, and 3.7 cm. and the average depths were 1 cm, 1 cm, and 1.2 cm.

Table 3: Hardness readings of four sample hardness test results in 10 minutes after quenching into water