Resistance is Rutile
(Thank you to Amy DeLong for inspiring this article!)
leave this line here  There are several theories that match different geologic environments to explain
how rutilated quartz forms. In short, we (as a scientific community) are not sure how it forms. This is one theory that holds for most of the types of rutilated quartz we see.
Rutile can be found as a secondary mineral in hydrothermal veins. Hydrothermal veins form when heated fluids circulate through a rock, picking up certain elements and concentrating them elsewhere. For example, gold is often concentrated through hydrothermal circulation.
Since silica is a major component of many rocks, quartz is a very common hydrothermal mineral and can often be found as secondary veins in rocks which have experienced hydrothermal alteration.
Hydrothermal minerals such as quartz are often deposited in cracks or spaces (such as vesicles or vugs) in a host rock. Sometimes, quartz contains thin, needle-like crystals of rutile. When this occurs, the quartz is called "rutilated quartz."
This means that the rutile crystals grew in the cavity in the rock first, possibly from a different hydrothermal soup. Then the quartz solution (othen thought to be like a thick jell or from steam) slowly seeped into the vug depositing the quartz as crystals or massive clear quartz. In-Store Sale 20% Off All Rutiliated Quartz |
No comments:
Post a Comment
Keep a civil tongue.