Mineralogy Archives - Page 5 of 6

Mineral properties

December 17, 2019 admin 0

The word mineral comes from the Latin minera, or mine. Until the nineteenth century, minerals were simply things that came out of mines—things that had […]

What Causes Color in Topaz?

November 12, 2019 admin 0

Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Topaz crystallizes in the orthorhombic system, and its crystals are mostly […]

The largest gold nugget ever found In Alaska

November 11, 2019 admin 0

The largest gold nugget ever found In Alaska It weighs a whopping 294.10 troy ounces (9.14 Kilograms, 20.16 pound), and was found near the town […]

Sedimentary Rocks Represent Past Environments

October 8, 2019 admin 2

Distinguish among three broad categories of sedimentary environments and provide an example of each. List several sedimentary structures and explain why these features are useful […]

Igneous Textures: What Can They Tell Us?

October 7, 2019 admin 2

Identify and describe the six major igneous textures. The term texture is used to describe the overall appearance of a rock based on the size, […]

How Magmas Evolve

October 4, 2019 admin 1

Describe how magmatic differentiation can generate a body that has mineralogy (chemical composition) that is different from its parent magma. Geologists have observed that, over […]

Gemstones and minerals;

October 4, 2019 admin 1

Precious stones have been prized since antiquity. Although most gemstones are varieties of a particular mineral, misinformation abounds regarding gems and their mineral makeup.

Mineral Structures and Compositions

October 4, 2019 admin 1

Distinguish between compositional and structural variations in minerals and provide one example of each. Many people associate the word crystal with delicate wine goblets or […]

Conglomerate and Breccia

September 12, 2019 admin 2

Conglomerate consists largely of rounded gravel-size particles (Figure 1). As Figure 2 indicates, these particles can range in size from large boulders to particles as […]

Silicate Versus Nonsilicate Minerals

August 7, 2019 admin 1

It is worth noting that only eight elements make up the vast majority of the rock-forming minerals and represent more than 98 percent (by weight) […]

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