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2. Inclusion (mineral) - Wikipedia

   en.wikipedia.org/wiki/Inclusion_(mineral)

   In mineralogy, an inclusion is any material trapped inside a mineral during its formation. In gemology , it is an object enclosed within a gemstone or reaching its surface from the interior. [ 1 ] According to James Hutton 's law of inclusions, fragments included in a host rock are older than the host rock itself.

3. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...

4. Herkimer diamond - Wikipedia

   en.wikipedia.org/wiki/Herkimer_diamond

   Inclusions can be found in these crystals that provide clues to the origins of the Herkimer diamonds. Found within the inclusions are solids, liquids (salt water or petroleum), gases (most often carbon dioxide), two- and three-phase inclusions, and negative (uniaxial) crystals. A black hydrocarbon is the most common solid inclusion. [6]

5. Quartz Vs. Granite: Which Stone Is Right For Your ... - AOL

   www.aol.com/quartz-vs-granite-stone-countertops...

   Whereas quartz countertops are man-made, granite is a naturally occurring stone, quarried from the earth, then cut and polished into the countertop material so many know and love. Made of stern ...

6. Fluid inclusion - Wikipedia

   en.wikipedia.org/wiki/Fluid_inclusion

   These inclusions usually range in size from 0.01 mm to 1 mm and are only visible in detail by microscopic study, however specimens of fenster or skeletal quartz may include thin sheet-like inclusions that are many millimetres in length and breadth within their lamellar voids. These inclusions occur in a wide variety of environments.

7. Enhydro agate - Wikipedia

   en.wikipedia.org/wiki/Enhydro_agate

   A microscopic picture of a fluid inclusion (non-permeable enhydro) showing a dark vapor bubble trapped in quartz. The term three phase relates to the three phases of matter, solid, liquid, and gas. This is a three phase inclusion in rock crystal quartz. The solid is a black material that is of bituminous origin.