File:Bronze Age muller (profile) (FindID 202618).jpg
Original file (1,280 × 960 pixels, file size: 440 KB, MIME type: image/jpeg)
Captions
Summary
[edit]Bronze Age muller (profile) | |||
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Photographer |
Royal Institution of Cornwall, Anna Tyacke, 2007-12-05 23:03:14 |
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Title |
Bronze Age muller (profile) |
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Description |
English: Fine-grained granite elvan muller or rubbing stone. The muller is oval in plan, with two rounded ends, and plano-convex in section. The muller is flat and smooth on the face that was used for rubbing, and convex on the opposite face, where it was held and pushed across a base for grinding. The muller would have been used with a larger saddle quern to grind grain between the stones to make flour.
The elvan is a fine grained granitic inclusion and contains pale pink felspars and black quartz. The soft felspars would work into hollows and the hard quartz would stand proud of the surface, thus allowing a shearing action to cut and grind the grain. There are also random black patches of tourmaline and a distinctive circular tourmaline vein, but not enough to suggest that it was reoccurring within the granite. The shape of the muller suggests that it was made from a beach cobble. Jones (2002) illustrates a similar example excavated from Callestick on page 29, Fig.13, No.95 which is dated to the Later Bronze Age, c.1100-700 BC. Nowakowski (1991) illustrates a similar elvan example excavated from Trethellan on page 142, Fig.57, No.89, which dates from the Middle Bronze Age, c.1500-1200 BC. |
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Depicted place | (County of findspot) Cornwall | ||
Date | between 1500 BC and 800 BC | ||
Accession number |
FindID: 202618 Old ref: CORN-71FB50 Filename: Novemberfinds 015.jpg |
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Credit line |
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Source |
https://finds.org.uk/database/ajax/download/id/158568 Catalog: https://finds.org.uk/database/images/image/id/158568/recordtype/artefacts archive copy at the Wayback Machine Artefact: https://finds.org.uk/database/artefacts/record/id/202618 |
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Permission (Reusing this file) |
Attribution-ShareAlike License version 4.0 (verified 15 November 2020) |
Licensing
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:40, 22 January 2017 | 1,280 × 960 (440 KB) | Fæ (talk | contribs) | Portable Antiquities Scheme, CORN, FindID: 202618, bronze age, page 151, batch count 2648 |
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Metadata
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Camera manufacturer | NIKON |
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Camera model | E4500 |
Exposure time | 1/52 sec (0.019230769230769) |
F-number | f/2.7 |
ISO speed rating | 100 |
Date and time of data generation | 15:26, 29 November 2007 |
Lens focal length | 8.7 mm |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E4500v1.2 |
File change date and time | 15:26, 29 November 2007 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 15:26, 29 November 2007 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 2.8 APEX (f/2.64) |
Metering mode | Center weighted average |
Light source | Tungsten (incandescent light) |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |