View allAll Photos Tagged Quartz
Locality: Djurkovo Mine, Bulgaria Laki
Size: Specimen is 5.8 inches wide.
SC2-3110
This is a closer view of:
www.flickr.com/photos/usageology/49539409728/in/photostream/
In all our travels around Snowdonia we kept coming across seams of quartz in the rock. Cregennen was different; all around were great lumps of the stuff such as these!
(~1.95 centimeters across at its widest)
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"Dendritic agate" is a rockhound term applied to fine-grained quartz / chalcedony having dark-colored, irregularly-shaped to branching inclusions of one or more opaque minerals.
Locality: unrecorded / undisclosed
While watching 007 classic You Only Live Twice, was struck by this interesting shot - Japanese spook girl's car equipped with Takumar lenses.
Super-Takumar 1:1.4 50mm on the left is of course the old classic - radioactive thorium rear element lens commonly plagued by yellowing problem. Once yellowing is cured by exposure to UV light - terrific lens.
The other lens - Quartz-Takumar 3.5/85mm on the right is something not commonly found - an experimental lens for UV photography primarily for scientific purposes. The fact that movie producers decided to equip the car with such a rare and exotic lens is amazing, its almost like they used the real spy car for the shoot.
Synthetic Quartz. The mineral is silicon dioxide. These man-made crystals were grown under labratory conditions. (Collection of the Colorado School of Mines Geology Museum. Golden, Colo.)
Pyrite on Quartz. Tucson Mine. Leadville District. Lake Co., Colo. (On loan to the Mines Museum of Earth Science. Golden, Colo.)
digital fine AI art of a Quartz crystal globe, highly detailed
Prompt: full view, 3D style, crystal structures inside globe, intricate formation of geometric amethyst shards clustered with budding spikes of emerald and crimson quartz, vibrant, dreamscape, dreamlike, fantasy, realism
Locality: Macaco Mine, Sao Geraldo do Baixio, Minas Gerail Brazil
Size: Specimen is 2.68 inches wide.
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28g
A hiker on the summit of Quartz Hill with Howard Douglas Lake below, Fatigue Mountain, Cidatel Pass and Citadel Peak in the distance
Quartz pseudomorph after Ilvaite. 2nd Sovietskiy Mine. Dalnegorsk Urban District. Primorsky Kray, Russia.
Experimental Shot (pinned wasp in air): Detail of a much larger picture taken at 1:1 as part of a series of comparisons among specimens photographed in the air versus in hand sanitizer, this is the defacto standard for sharpness, the other specimens are all taken with the exact same settings
Bornite with Quartz and Chalcocite coated Pyrite. Bornite is copper iron sulfide. Steward Mine. Butte District. Butte, Silver Bow Co., Montana.
☞ See the original photo in 1st comment below. • Created with the Amazing Circles tool of dumpr.net.
Locality: Due West, Abbeville Co., SC
From the collection of the Natural History Museum of Los Angeles NHMLA - 23151
Geodes are small to large, subspherical to irregularly-shaped, crystal-lined cavities in rocks. They form when water enters a void in a host rock and precipitates crystals. The most common geode-lining mineral is quartz.
The quartz crystals were less than 1mm in diameter.
I was disappointed with the lighting on the last pic I made, so I redid it with different lights. Hope this looks better!
Tourmalinated quartz is a type of quartz crystal that contains inclusions of tourmaline, a mineral often found alongside quartz. It forms during hydrothermal events, where hot fluids interact with rocks and minerals, creating the conditions for tourmaline to become trapped within growing quartz crystals.
This particular mineral specimen was found in the Falls Lake Terrane in Wake County, NC. The specific geological history and processes that led to its formation are unknown to me. Hopefully, this post might reach someone familiar with the region's geological and mineralogical history to provide more insight. Nonetheless, I believe this specimen does a remarkable job of showcasing the fascinating geological history of the NC Piedmont.
Locality: Ace of Diamonds Mine, Herkimer County, New York
Size: Crystal is 0.79 inches long.
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568g