GarzaHazel_ExtraCredit

Hazel Garza Physical Geology Extra Credit Assignment Virtual Mineral and Rock Collection : You must collect at least 40 pictures of minerals and/or rocks. For each specimen, you must have a picture, the mineral or rock name, source of the picture (URL link), and a short description about why you chose the specimen. The layout of this data should be easy to understand and read. Using a Word table works very well for this. Photo Name Description Source 1. Gold (Mineral) Gold is one of the, if not the most popular and well-known mineral out there. It is easily the first mineral I thought of before starting this assignment. https:// mineralseducationcoalition.org/wp- content/uploads/ Gold1_90782147.jpg 2. Halite (Mineral) Halite (NaCl) is a naturally occurring rock salt and is considered a mineral because it has a definite chemical composition and crystalline structure. https://www.britannica.com/ science/halite 3. Pyrite (Mineral) Pyrite, also commonly known as “fool’s gold,” is a mineral often mistaken for gold, hence the nickname. Pyrite is a sulfide mineral. https:// rocksminerals.flexiblelearning.auckland.a c.nz/minerals/pyrite.html 4. Quartz (Mineral) Quartz is the most common mineral and my personal favorite, more specifically Rose Quartz because of its pink color. https://geologyscience.com/ minerals/quartz/ 5. Apatite (Mineral) Apatite is a group of phosphate minerals usually green in color. It is often used as a gemstone for jewelry. https:// geology.fandom.com/wiki/ Apatite 6. Topaz (Mineral) Topaz is a mineral and gemstone that is prized for its vibrant colors and high clarity. It can come in a variety of shades, including blue, yellow, pink, and even colorless. http://nevada-outback-gems.com/ mineral_information/ Topaz_mineral_info.htm

Hazel Garza 7. Garnet (Mineral) Garnet is a mineral and gemstone that is typically red or deep red in color. It is known for its beauty and durability, making it a popular choice for jewelry. https:// mineralseducationcoalition.org/ minerals-database/garnet/ 8. Amazonite (Mineral) Amazonite is a green variety of the mineral microcline, a type of feldspar. It is known for its beautiful color and is often used in jewelry and decorative objects. https://en.wikipedia.org/wiki/ Amazonite 9. Talc (Mineral) Talc is a soft, white mineral that is commonly used in various industries, such as cosmetics, ceramics, and papermaking. https:// mineralseducationcoalition.org/ minerals-database/talc/ 10. Kyanite (Mineral) Kyanite is a blue silicate mineral that is typically found in metamorphic rocks. It is known for its distinctive bladed crystal structure and its high resistance to heat. https://www.mindat.org/min- 2303.html 11. Sodalite (Mineral) Sodalite is a mineral that is mostly composed of sodium aluminum silicate chloride. It is known for its vibrant blue color, often with veins/patches of white calcite. https://uwaterloo.ca/earth-sciences- museum/resources/detailed-rocks- and-minerals-articles/sodalite 12. Serpentine (Mineral) Serpentine is a group of minerals commonly found in metamorphic rocks. It is typically green in color and has a soft, fibrous, and sometimes snake-like appearance. https://miamiminingco.com/ 2023/01/04/serpentine-minerals- characteristics-uses-and-formation/ 13. Muscovite (Mineral) Muscovite is a common mineral belonging to the mica group. It is characterized by its transparent appearance. It’s typically found in igneous and metamorphic rocks. https://www.fossilera.com/ minerals/4-9-muscovite-crystal- cluster-brazil

Hazel Garza 21. Basalt (Igneous Rock) Basalt is a fine-grained, dark-colored igneous rock that is formed from solidified lava. It is one of the most common types of rock found in the Earth's crust and is known for its high density and strength. https://geologyscience.com/rocks/ basalt/ 22. Rhyolite (Igneous Rock) Rhyolite is a type of volcanic rock that is rich in silica content. It is formed from highly viscous lava that cools quickly on the Earth's surface. Rhyolite typically has a light color and a fine-grained texture, with the presence of small crystals of minerals such as quartz and feldspar. https://geologylearn.blogspot.com/ 2015/03/rhyolite.html 23. Pumice (Igneous Rock) Pumice is a light, porous volcanic rock that is formed when lava with a high content of gas and water rapidly cools. It has a unique sponge-like texture, characterized by countless pores and air bubbles. https://www.worldatlas.com/ articles/pumice-facts-geology-of-the- world.html 24. Diabase (Igneous Rock) Diabase, also known as dolerite, is a dark-colored igneous rock that is primarily composed of plagioclase feldspar and pyroxene minerals. It typically exhibits a fine-grained texture and forms through the slow cooling of magma deep within the Earth's crust. https://www.nps.gov/goga/learn/ education/diabase-faq.htm 25. Obsidian (Igneous Rock) Obsidian is a naturally occurring volcanic glass that forms when lava cools rapidly. It has a smooth and glassy texture, with a dark color usually ranging from black to dark brown. https://www.geologypage.com/ 2019/08/obsidian-what-is-obsidian- why-obsidian-is-black.html 26. Granite (Igneous Rock) Granite is an igneous rock that is formed from the slow crystallization of molten magma deep within the Earth's crust. It is known for its durability, strength, and attractive appearance. It’s commonly used as a dimension stone for countertops. https://www.geologypage.com/ 2019/05/granite-rocks.html 27. Gneiss (Metamorphic Rock) Gneiss is a metamorphic rock formed from the recrystallization of pre- existing igneous or sedimentary rocks. It typically exhibits alternating bands or layers of different minerals, giving it a banded or striped appearance. https://www.sandatlas.org/gneiss/

Hazel Garza 28. Marble (Metamorphic Rock) Marble is a metamorphic rock that is commonly used in architecture and sculpture due to its elegant appearance. It is formed when limestone is subjected to extreme heat and pressure. https://www.minimegeology.com/ marble-metamorphic-rock-white 29. Schist (Metamorphic Rock) Schist is a metamorphic rock characterized by its foliated texture, which means it is composed of minerals arranged in parallel layers or bands. It is formed through the process of regional metamorphism. https://www.alexstrekeisen.it/ english/meta/schist.php 30. Slate (Metamorphic Rock) Slate is a fine-grained metamorphic rock that is predominantly composed of minerals such as mica, quartz, and clay minerals. It is characterized by its ability to be split into thin, flat sheets. https:// rocksminerals.flexiblelearning.auckl and.ac.nz/rocks/slate.html 31. Phyllite (Metamorphic Rock) Phyllite is a smooth-textured metamorphic rock that forms from the low-grade metamorphism of shale or slate. It is characterized by its fine- grained foliated texture and luster resulting from the parallel alignment of fine mica crystals. https://rockidentifier.com/wiki/ Phyllite.html 32. Hornfels (Metamorphic Rock) Hornfels is a fine-grained metamorphic rock that forms when heat and pressure cause the recrystallization of existing rocks. It typically has a non-foliated texture. https://en.wikipedia.org/wiki/ Hornfels 33. Chalk (Sedimentary Rock) Chalk is a soft, porous sedimentary rock made up primarily of calcium carbonate. It is commonly used for writing, drawing, and marking on blackboards or other surfaces due to its powdery texture. https://geology.com/rocks/ chalk.shtml 34. Caliche (Sedimentary Rock) Caliche is a sedimentary rock formation that consists of hardened calcium carbonate deposits. It is commonly found in arid regions and characterized by its hardness and cement-like texture. https://geology.com/rocks/ caliche.shtml