File:Native sulfur on siliceous sinter (Quaternary; Steamboat Springs, Nevada, USA) 1.jpg
![File:Native sulfur on siliceous sinter (Quaternary; Steamboat Springs, Nevada, USA) 1.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/05/Native_sulfur_on_siliceous_sinter_%28Quaternary%3B_Steamboat_Springs%2C_Nevada%2C_USA%29_1.jpg/800px-Native_sulfur_on_siliceous_sinter_%28Quaternary%3B_Steamboat_Springs%2C_Nevada%2C_USA%29_1.jpg?20201204155624)
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Summary
[edit]DescriptionNative sulfur on siliceous sinter (Quaternary; Steamboat Springs, Nevada, USA) 1.jpg |
English: Sulfur on siliceous sinter from the Quaternary of Nevada, 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. Sulfur makes up way less than 1% of the Earth's crust, but it is not valuable. Elemental sulfur is frequently found at or near volcanic vents and fumaroles. Significant concentrations of sulfur occur in the Gulf of Mexico subsurface (Louisiana-Texas area). Sulfur has a nonmetallic luster and a bright canary-yellow color (when heated to a liquid, it becomes reddish-orange). It is fairly soft, lightweight, brittle, lacks cleavage, and has a distinctive scent. This sample consists of sulfur crysals atop siliceous sinter, which is a chemical sedimentary rock formed by precipitation of opal (= hydrous silica, SiO2·H2O) from hot spring water. Locality: Silica Pit, Steamboat Springs Mine, Steamboat Springs District, south of Reno, southern Washoe County, western Nevada, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/50677654602/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/50677654602. It was reviewed on 4 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
4 December 2020
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current | 15:56, 4 December 2020 | ![]() | 3,300 × 2,316 (7.38 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50677654602/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/9 |
ISO speed rating | 80 |
Date and time of data generation | 15:18, 3 December 2020 |
Lens focal length | 8.3 mm |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 20:18, 3 December 2020 |
Exif version | 2.21 |
Date and time of digitizing | 15:18, 3 December 2020 |
APEX shutter speed | 5.9068905902692 |
APEX aperture | 6.3398500267809 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.3561438092556 APEX (f/3.2) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905405405 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 15:18, 3 December 2020 |
Unique ID of original document | 3BD26E8DB4271AC46700F9E2F4476825 |