Another macro shot of amethyst crystal specimen.
Amethyst is a type of quartz, crystalline silicon dioxide (SiO2), which contains inclusions of iron on the crystal.
This view focuses on a transition from the purple crystal to a yellow-clear crystal, and the greenish rock matrix.
Space Coast Photography Studios
- They/Them
- heronfox.pixels.com/
Two Central Florida photographers with an interest in nature, landscape, bird, flower, space, technology, and architecture photography.
A macro shot of a specimen of anthracite coal.
Anthracite is the hardest form of coal, and has been metamorphized by heat and pressure.
Anthracite is by far the cleanest-burning coal, with the fewest toxic inclusions like mercury and lead, and produces the least carbon monoxide. Thus, it is highly desirable in coal stoves in homes, making it far too expensive for electricity production.
The rock has cleaved in even and uneven lines.
This view shows some of the inclusions and the fracturing.
