View allAll Photos Tagged Quartz
Locality: Aiguille de l'Eboulement Massif du Mont Blanc, Chamonix, Haute Savoie, France
Size: Specimen is 7.5 inches wide
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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*
Locality: Madan Ore Field, Smolyan Oblast, Bulgaria
Size: Specimen is 4.7 inches wide.
For a view of the complete specimen, follow this link:
www.flickr.com/photos/usageology/39466063604/in/photostream/
Calcite (fluorescent) frosted with lots of little quartz cystals. Dal'negorsk, 400kn NE of Vladivostok, Primorskiy Kray (Krail), East Russia, C.I.S. Approximately 6" long x 4.5" at widest point.
28 eme festival européen du film court.
www.facebook.com/pages/Mathieu-le-Gall-Photographe/123570...
js207 Quartz is the new latex land doll of 2018 :) I meet her in the shiny shallow sea.
More latex land links below.
Quartz framed by pink and yellow tube agate formation.
4.92" x 1.77" (12.5 x 4.5 cm)
2.8 lbs (1.28 kg)
Locality: Silverton, San Juan, Colorado
Specimen is part of the the Natural History Museum of Los Angeles, Gem and Mineral Hall Collection
NHMLA-20425
A cluster of Quartz crystals. Light was provided from a 24 LED light stand below, with a single White LED spot light for hight lights from behind.
From Island Ave, Peaks Island (in Casco Bay), Maine USA • My first successful arch (thnx Barnabas) rises on the deck; all from quartz and quartzite. I've been building miniature, windowed Inukshuk, for some time; finally an arch – holding a week now.
Quartz is likely one of the most common minerals you will come across while out collecting. It is a very abundant mineral in the continental crust and it is both physically and chemically stable, which means it can accumulate at the surface, while other minerals and rocks weather away.
CHEMICAL FORMULA - SiO2 (Silicon Oxide or Silicon Dioxide)
CRYSTAL SYSTEM - Trigonal or Rhombohedral (3 axes of equal length and 120 degrees apart, in one plane; and
a 4th axis perpendicular to the plane of the three)
HABIT - 6-sided spear-like crystals, massive See this video www.flickr.com/photos/usageology/52414098179/in/album-721...
HARDNESS - 7
LUSTER- Vitreous, waxy
STREAK - white
COLOR - clear, white, brown, black, gray, purple, yellow, pink, blue, green
DENSITY - 3.65
CLEAVAGE - None
FRACTURE - Conchoidal, subconchoidal In this video, the conchoidal fracture is very well exhibited. www.flickr.com/photos/usageology/52414273148/in/album-721...
OCCURRENCE – Quartz is a significant component of igneous metamorphic and sedimentary rocks. Quartz crystals often grow in vugs of limestone, that has been penetrated by hot water. Most sand is largely quartz grains.
* It's superior hardness of 7 and lack of cleavage, makes it physically stable. It is hard to wear down, so it tends to stick around on Earth's surface for a long time..
* It does not readily react with acids that are found at the Earth's surface, so it is chemically stable.
* The most common mineral in sand, whether it be beach sand, dune sand or river sand, is quartz. (If other minerals are dominant it is due to a unique geological situation. As an example, the olivine-rich sand (green sand) beaches of Hawaii arise from the weathering of basalts, due to volcanic eruptions, and the nearly complete absence of quartz on the volcanic islands.) So, other common mineral grains like feldspars, micas, pyroxenes, amphiboles simply weather away leaving the more resistant quartz to accumulate. In terms of Geological age, the older the beach the higher percentage of quartz.
* Pure quartz is clear but it can be colored by impurities to quite an astonishing array of colors: white (milky), purple (amethyst), yellowish (citrine), gray or brown to black (smoky), pink (rose quartz). Although very unusual, there is even green quartz and blue quartz.
* Quartz can occur in many different forms other than the crystals of #13. Chert, jasper (#5), agate, chalcedony (#5), petrified wood (#10), flint, and even opal (#18) are forms of this ubiquitous mineral.
USES:
* Jewelry - Its many beautiful colors and relative hardness make it a desireable inexpensive gemstone.
* As a result of its durability, color and abundance, quartz has been used for 1000's of years as a decorative stone.
* Major ingredient in glass
* Abrasive - sandpaper
* Watches and clocks: the rate and regularity at which quartz oscillate helps to keep the time accurate
* Electrical & heat insulators
* Optical lenses
* Sand traps on golf courses
We cannot include every detail about the mineral, so here is a Wikipedia link to get you started on exploration: en.wikipedia.org/wiki/Quartz
Locality: Dara Ismael Khan District, Waziristan, Pakistan
Size: Specimen is 1.7 inches across.
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11g
Quartz, Minas Gerais, Brazil.
Seen in Terra Mineralia, the largest collection of minerals in the world, Freiberg, Germany.
~15 x 8 x 7.5 cm., 3-pounds 6.3 ounces. Kapnik, Romania. (It was spelled "Rumania" on the original mineral tag.) Possibly, from Cavnic in the Maramures region of Romania. This is an exquisite specimen. I've allowed reflections to highlight some of the crystals.
My parents paid several times more for this specimen than any other mineral they bought during the 70s. I need to learn more about this one. Feedback is welcome.
Locality: Wushan Spessartine Mine, Tongbei, Yunxian Co., Ahangshou Prefecture, Fujian Province, China
Size: Specimen is 4.2 inches wide. Larger crystal on right is 2.1 inches tall.
287g
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A transparent quartz crystal from Tamayama gold mine, Rikuzen-takata, Iwate pref. Japan.
Yesterday, the centre of Rikuzen-takata city was completely destructed by tsunami triggered by massive underwater earthquake.
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quartz, probably from Mt. Ida, Arkansas, that has been given a thin titanium coating in the lab
~11 cm long
Quartz Epimorph (Cast) Over Calcite with a sprinkling of Marcasite spheres.
Locality: Cavnic, Maramures County, Romania
Herkimer "Diamond" Quartz (Middleville, NY). 1.11ct, 7.12x7.18x4.78mm. Untreated. Rose Round #2. (Qtz802)
Cut on commission for a jeweler who grew up in the Herkimer, NY area. I love finding excuses to cut these. NY has very few gems to brag about. These "Herkimer Diamonds" are just rock crystal quartz, but somehow looks like so much more when cut right.
Quartz crystals in the cumberland habit. Second Sovietskiy Mine. Dalnegorsk Urban District. Dalnegorsk. Primorskiy Kray, Russia.
Brazil Quartz Included - A close view of a gigantic cluster of quartz crystals mined in Brazil. The color comes from the blue cloth background but the yellow color is the inclusion within clear quartz crystals.
Ferberite with Quartz, Ferberite is iron tungstate. Yaogangxian Mine. Yizhang, Chengzhou County, Hunan Province, China.