File:Bournonite (La Oroya, Peru).jpg
![File:Bournonite (La Oroya, Peru).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Bournonite_%28La_Oroya%2C_Peru%29.jpg/703px-Bournonite_%28La_Oroya%2C_Peru%29.jpg?20201023183955)
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Summary
editDescriptionBournonite (La Oroya, Peru).jpg |
English: Bournonite from Peru. (CSM 83.328, Colorado School of Mines Geology Museum, Golden, Colorado, 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 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. The sulfide minerals contain one or more sulfide anions (S-2). The sulfides are usually considered together with the arsenide minerals, the sulfarsenide minerals, and the telluride minerals. Many sulfides are economically significant, as they occur commonly in ores. The metals that combine with S-2 are mainly Fe, Cu, Ni, Ag, etc. Most sulfides have a metallic luster, are moderately soft, and are noticeably heavy for their size. These minerals will not form in the presence of free oxygen. Under an oxygen-rich atmosphere, sulfide minerals tend to chemically weather to various oxide and hydroxide minerals. Bournonite is a lead copper antimony sulfide (PbCuSbS3) - it's one of the sulfosalt minerals. It has a metallic luster, a silvery-gray color, is moderately soft (H = 2.5 to 3), and is heavy for its size (= moderately high specific gravity). Locality: La Oroya (attributed to Lima Department), Andes Mountains, western Peru Photo gallery of bournonite: www.mindat.org/gallery.php?min=741 |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/20578295754/ |
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@N05/20578295754. It was reviewed on 23 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
23 October 2020
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:39, 23 October 2020 | ![]() | 1,577 × 1,345 (1.74 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/20578295754/ with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D70s |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.6 |
ISO speed rating | 500 |
Date and time of data generation | 11:41, 25 July 2007 |
Lens focal length | 200 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 18:19, 6 September 2015 |
Y and C positioning | Centered |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 11:41, 25 July 2007 |
Meaning of each component |
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APEX shutter speed | 5.9068905902692 |
APEX aperture | 4.9708536585366 |
APEX exposure bias | 0 |
Maximum land aperture | 5.0219238147438 APEX (f/5.7) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 10 |
DateTimeOriginal subseconds | 10 |
DateTimeDigitized subseconds | 10 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 300 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Lens used | 18.0-200.0 mm f/3.5-5.6 |
Serial number of camera | 1004a0cc |
Date metadata was last modified | 12:19, 6 September 2015 |
Unique ID of original document | 8930C000ED6A00D80E62E325E00D06BF |