View allAll Photos Tagged Quartz
An amazing litle world made of billions of egg shaped quartz grains. This is the combined effect of erosion, river and sea transport. Is Aruttas beach, Sinis peninsula, Sardinia.
Locality: Ruby, Arizona
Scale is shown in image. Mover cursor over image to see the scale box.
This is a small quartz lined vug in rhyolite that contains quartz scepters and reverse scepters.
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.)
This portion of the Highway 1 Kamloops to Alberta program involves replacing the two-lane bridge crossing at Quartz Creek, 40 km west of Golden, with a new four-lane bridge, access improvements to forest service roads and widening 4.4 km of two-lane highway to four lanes.
No. 42 of 115 Pictures in 2015 - Negative Space.
I've been very slow to get going with the 115 this year, noticed that I've not missed the compulsory date in two days time! Hopefully the longer days will bring photographic inspiration.
A new Chinese pocket watch I've just received from China. In a hunter style case, with a small compass as well (just visible edge-wise on the cover). And this one has a quartz movement, not a mechanical one.
The most abundant elements making up the crust of the Earth are oxygen and silicon. They are found in many minerals but are solely bonded together in Quartz. It is the second most abundant mineral in the crust after Feldspar. This is a shot of a crystal of Quartz. The arrangement of atoms in the mineral give it a unique crystal shape. Taken with a Canon 60mm USM Macro lens. Type L for a better view. Click on the link below for more information.
geology.about.com/od/minerals/f/mostcommonmin.htm
Our Daily Challenge - Elements (Earth) - 7/23/11
This is three views of the same specimen.
From the collection of the Natural History Museum of Los Angeles, Gem and Mineral Hall
I collected this 13 mm crystal at the Stoddard Mine in Westmoreland, New Hampshire just this past weekend (April 29, 2006), on a Boston Mineral Club field trip. The ground was literally littered with quartz crystals and fluorite. The yellow is due to iron oxide staining, easily removed but I like the color.
These two looks sooo cuddly and they are still available for adoption at Angels With Paws in Lakewood, Colorado can also be found at www.petfinder.com
Locality: Piedra Parada (Las Vigas), Municipio de Tatatila,
Vera Cruz, Mexico
Size: Crystal group is 1.1 by 1.1 inches.
Quartz avec billes de Goethite. 24 photos en focus stacking. Champ photographié : 9 mm.
Quartz with Goethite balls on it. 24 photos stacked in focus stacking method.
Beaujeu region - 69 Rhône - France
Pyrite on Quartz. Pyrite is iron sufide. Garbutt Mine. Leadville, Lake Co., Colo. (On loan to the Colorado School of Mines Geology Museum. Golden, Colo.)
A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 5700 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The silicates are the most abundant and chemically complex group of minerals. All silicates have silica as the basis for their chemistry. "Silica" refers to SiO2 chemistry. The fundamental molecular unit of silica is one small silicon atom surrounded by four large oxygen atoms in the shape of a triangular pyramid - this is the silica tetrahedron - SiO4. Each oxygen atom is shared by two silicon atoms, so only half of the four oxygens "belong" to each silicon. The resulting formula for silica is thus SiO2, not SiO4.
Dumortierite is a scarce silicate mineral having the formula (Al,Fe)7(SiO4)3(BO3)O3 - aluminum iron borosilicate. It is often bluish, but can be other colors (greenish, purplish, pinkish, reddish). Dumortierite is fairly hard (H=7 to 8 on the Mohs Hardness Scale).
Seen here is a dumortierite-quartz specimen from the Precambrian of Brazil. It comes from an area having dumortierite-bearing quartzites (= metamorphosed sandstones) that are quarried, cut, and polished as decorative stones ("Azul Macaubas").
Locality: unrecorded/undisclosed site in Brazil (but probably from or near the Vaca Morta Quarry, southwest of Boquira, Bahia State, eastern Brazil)
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Photo gallery of dumortierite:
Gyrolite on Quartz. Gyrolite is a hydrated calcium silicate hydroxide. Malad Quarry. Mumbai District. Mumbai, Mahrashtra, India
Quartz var. Amethyst. Amethyst Mine. Creede District. Mineral Co., Colo. (Collection of the Colorado School of Mines Geology Museum, Golden, Colo.).
Part of a massive geode in the American Museum of Natural History, New York City. It was nine feet tall and weighed as much as four rhinos... though I have no idea why rhinos is now a unit for measuring weight. I also think it kinda looks like the galactic core.
Locality: Salina Canyon, Inyo County, California
From the Natural History Museum of Los Angeles Gem and Mineral Hall Collection.
Locality: Madan Ore Field, Smolyan Oblast, Bulgaria
Size: Specimen is 4.7 inches wide.
For a close up view follow this link:
www.flickr.com/photos/usageology/28397056319/in/photostream/