View allAll Photos Tagged Quartz
Locality: Jacobina, Bahia, Brazil
Specimen is part of the the Natural History Museum of Los Angeles, Gem and Mineral Hall Collection
NHMLA-20224
Locality: Mamuju area, Sulawesi Barat Province, Sulawesi, Indonesia
From the collection of the Natural History Museum of Los Angeles, Gem and Mineral Hall
Quartz, Dachang, Quinglong, Guizhou, China.
Seen in "Terra Mineralia", one of the largest collections of minerals in the world.
This is two versions of an apt little linocut for your cabinet of curiosity; a quartz crystal complete with iridescent facets. I printed a variable edition of eight prints, 6.25" by 7.5" (16 cm by 18.8 cm) on Japanese kozo (or mulberry) paper, with chine collé (collaged fine Japanese paper) facets in iridescent pink origami paper. Each print is unique, with a different selection of iridescent facets. Depending on the angle at which you view the print, these facets can appear to include a shimmering range of blue through pink through yellow. The specimen is labelled 'Quartz' in a printed script, so you can begin a hand-printed mineral portrait collection.
Botryoidal Chalcedony
Locality: Bagdad, Arizona
This is a close up view of:
www.flickr.com/photos/usageology/50701174571/in/photostream/
Gold and Quartz. Tarantula Mine. Tuttletown District. Mother Lode Belt. Tuolumne Co., Calif.. (Collection of the New Mexico Bureau of Geology Mineral Museum. Socorro, N.M.)
These ridges of white quartz stand out against the red landscape. Shot minutes before sunset with Velvia they take on warm hue.
Beautiful Quartz crystals with Fuchsite inclusions to creat beautiful zoning from Ambositra, Madagascar, 12cm.
Stunning natural quartz with an inclusion that resembles a plant. This is known as dendrite quartz. The plant like formation is an oxide of manganese that has formed in a hardly seen tenuous internal cleavage. These cleavages are due to internal tension inside the rock. It is not a clearly visible fissure. The manganese oxide has anciently penetrated in liquid state in the micro veins also known by the name of crystal foil. The bluish, opalized quartz color is due to the presence of tenuous fibers of actinolite and the yellow inclusion is known as cacoxenite. Cacoxenite is an oxide of iron. The rough crystal that originated this gemstone was found in the Brazilian State of Bahia and polished in São Paulo. A gemstone like this is able to attract more attention than an expensive diamond (brilliant) mainly when wearing an elegant woman in a sophisticated place. It measures 24 x 20 x 9 millimeters and weights 36 carats (6.2 grams)
This is a photo of a "big" quartz crystals among many smaller ones, at 20x magnification. Taken with my Canon SX110 IS, through a Novex stereo microscope with the lighting from above. The crystals are part of a quartz geode, with the biggest crystals measuring at most 2 mm. Part of my personal collection, from www.paulslab.com
When an inclusion transform a translucent quartz in a striking and rare gemstone...From Minas Gerais State, Brazil. Polished in Sao Paulo
Q is for Quartz
Sorry, I'm 4 weeks behind in uploading to the group ... but I do have pics for each challenge :)
Gold-quartz mass (public display, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA)
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 5600 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.
Elements are fundamental substances of matter - matter that is composed of the same types of atoms. At present, 118 elements are known. Of these, 98 occur naturally on Earth (hydrogen to californium). Most of these occur in rocks & minerals, although some occur in very small, trace amounts. Only some elements occur in their native elemental state as minerals.
To find a native element in nature, it must be relatively non-reactive and there must be some concentration process. Metallic, semimetallic (metalloid), and nonmetallic elements are known in their native state as minerals.
Gold (Au) is the most prestigious metal known, but it's not the most valuable. Gold is the only metal that has a deep, rich, metallic yellow color. Almost all other metals are silvery-colored. Gold is very rare in crustal rocks - it averages about 5 ppb (parts per billion). Where gold has been concentrated, it occurs as wires, dendritic crystals, twisted sheets, octahedral crystals, and variably-shaped nuggets. It most commonly occurs in hydrothermal quartz veins, disseminated in some contact- & hydrothermal-metamorphic rocks, and in placer deposits. Placers are concentrations of heavy minerals in stream gravels or in cracks on bedrock-floored streams. Gold has a high specific gravity (about 19), so it easily accumulates in placer deposits. Its high density allows prospectors to readily collect placer gold by panning.
In addition to its high density, gold has a high melting point (over 1000º C). Gold is also relatively soft - about 2.5 to 3 on the Mohs Hardness Scale. The use of pure gold or high-purity gold in jewelry is not desirable as it easily gets scratched. The addition of other metals to gold to increase the hardness also alters the unique color of gold. Gold jewelry made & sold in America doesn’t have the gorgeous rich color of high-purity gold.
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Photo gallery of gold:
This is SEIKO Quartz Chronograph SPORTS 100 TITANIUM watch. This is SEIKO's World's First Analog Quartz Chronograph watch. Manufactured in 1983. Titanium case and band.
Locality: Macaco Mine, Sao Geraldo do Baixio, Minas Gerail Brazil
Size: Specimen is 2.65 inches tall.
SC2-0016
22g
Le quartz est une espèce minérale du groupe des silicates, sous-groupe des tectosilicates, composé de dioxyde de silicium de formule SiO2 (silice), avec des traces de différents éléments tels que Al, Li, B, Fe, Mg, Ca, Ti, Rb, Na, OH. La citrine est une variété de quartz, dont la couleur jaune est due à la présence d'infimes quantités d'oxydes de fer dans le minéral. La citrine se trouve assez rarement à l'état naturel. Le plus souvent il s'agit d'améthyste chauffée qui prend une couleur jaune au lieu de violette. (Wikipedia)
Dimensions : 63 x 34 x 35 mm.
Locality: Aguila, Arizona
This is a close up view of the previous image:
www.flickr.com/photos/usageology/23283580964/in/photostream/
A quartz-clear dawn
Inch by bright inch
Gilds all our Avenue,
from
Southern Sunrise
Sylvia Plath
1932-1963
Dogtooth quartz, hematite, limonite and perhaps a trace of cinnabar, in this closeup of the spectacular stockwork at San Geronimo Creek. This is the sort of rock that made the mercury-miner's heart beat faster.
Worth your while to click on the magnifier-glass here, in the full screen version. This is pretty amazing detail (imho) for a cell-phone photo. Country rock is plain old Cambria Slab graywacke sandstone. This is an in-situ field photo, just as I found it.
Near the mouth of San Bernardo Creek, in Estero Bay State Park.
Another shot from a trip up Quartz Creek with Gaz. Had a great day exploring some new territory (for me) and just kicking around with a good friend. Thanks Gaz!
Also trying some new processing, working with LAB masks and smart objects. Not sure I totally like the outcome, but i thought I'd put it up anyways.
Happy day!
Locality: Toyee, Waziristan, NW Frontier, Pakistan
Size: Specimen is 2.32 inches tall.
Cat#: SC2-0200
20g w/stand
Montblanc watches department offers a variety of men's and ladies' timepieces, quartz and automatic, suitable for a wide range of purposes: sports, travelling, fashion, and casual. All pieces reveal refined, thought-out, but not imposing aesthetic, and a breadth of conception that few luxury brands can wield. Montblanc's status as a high-end fountain pen maker that also manufactures jewelry and sunglasses puts it in an advantageous position in that respect.
Dados Exif
Câmera Canon EOS 50D
Exposição 0,006 sec (1/160)
Abertura f/2.8
Distância focal 100 mm
ISO 100
*No Photoshop*