File:Silver wires on granite (Smuggler Mine, Aspen Mining District, Colorado, USA) (17086642037).jpg
![File:Silver wires on granite (Smuggler Mine, Aspen Mining District, Colorado, USA) (17086642037).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Silver_wires_on_granite_%28Smuggler_Mine%2C_Aspen_Mining_District%2C_Colorado%2C_USA%29_%2817086642037%29.jpg/432px-Silver_wires_on_granite_%28Smuggler_Mine%2C_Aspen_Mining_District%2C_Colorado%2C_USA%29_%2817086642037%29.jpg?20150506192933)
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Summary
[edit]DescriptionSilver wires on granite (Smuggler Mine, Aspen Mining District, Colorado, USA) (17086642037).jpg |
Native silver wires on granite matrix from Colorado, USA. (DMNH 8921, Denver Museum of Nature & Science, Denver, Colorado, USA) A mineral is a naturally-occurring, solid, inorganic, crystalline substrance 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 4900 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 (four of them are still unnamed). 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. Silver is part of the gold-group of metallic elements. Silver is a precious metal, but is far less valuable than gold or platinum. Silver usually occurs as a silver sulfide mineral, but it also occurs in nature in its native state, often in the form of twisted wires. Silver is moderately soft and has a silvery-white color on fresh surfaces that tarnishes to darker colors. Elemental silver in nature is often found alloyed with other metals. Naturally alloyed gold-silver is called electrum. Locality: Smuggler Mine, Aspen Mining District, Pitkin County, Colorado, USA |
Date | |
Source | Silver wires on granite (Smuggler Mine, Aspen Mining District, Colorado, USA) |
Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/17086642037. It was reviewed on 6 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 May 2015
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current | 19:29, 6 May 2015 | ![]() | 1,893 × 2,624 (3.9 MB) | Natuur12 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Metadata
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Camera manufacturer | OLYMPUS IMAGING CORP. |
Camera model | TG-1 |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/4.9 |
ISO speed rating | 800 |
Date and time of data generation | 13:47, 26 October 2013 |
Lens focal length | 18 mm |
Width | 3,968 px |
Height | 2,976 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 314 dpi |
Vertical resolution | 314 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 18:04, 27 April 2015 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 13:47, 26 October 2013 |
Meaning of each component |
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APEX shutter speed | 4.906891 |
APEX aperture | 4.585563 |
APEX exposure bias | −1.3 |
Maximum land aperture | 2 APEX (f/2) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1.2 |
Focal length in 35 mm film | 100 mm |
Scene capture type | Standard |
Scene control | High gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Receiver status | Measurement interoperability |
Reference for direction of image | Magnetic direction |
Direction of image | 47 |
GPS tag version | 0.0.3.2 |
Serial number of camera | BCA539215 |
Date metadata was last modified | 14:04, 27 April 2015 |
Unique ID of original document | ADD1212D8C9AD533B589709B6B057926 |