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BLADE
Unique ID: CORN-E5B579
Object type certainty: Certain
Workflow
status: Awaiting validation 
Flint plunging blade, rhomboidal in plan, plano-convex in profile and triangular in section, with unifacial retouch along the whole of the left margin to sharpen the edge, and along the right margin to blunt the edge, of the dorsal face. A layer of cortex remains across the distal end of the dorsal face and this has been removed on either side of the layer, at the edge of the medial ridge. This was probably done to remove bulbous areas of the cortex, possibly for ease of hafting. The proximal end has been truncated beyond the bulb of percussion, and the curvature of the flake is indicative of how it was struck off of the flint core.
The colour of the flint is a mottled light to dark grey, underneath the white patination and patches of orange iron staining, and the colour and rough texture of the cortex suggests that the flake was derived from a local beach pebble.
Bond (2004) illustrates a similar blade on page 137, fig.5.124, no.F24, which is dated from the Neolithic period.
Butler (2005) illustrates a similar serrated blade on page 131, fig.55, no.3, which is dated from the Neolithic period.
Mercer (1981) illustrates a similar backed and truncated serrated-edge flake from Carn Brea on page 143, fig.63, no.L203, which is dated from the Neolithic period.
Subsequent actions
Subsequent action after recording: Returned to finder
Chronology
Broad period: NEOLITHIC
Subperiod from: Early
Period from: NEOLITHIC
Subperiod to: Late
Period to: NEOLITHIC
Date from: Circa 4000 BC
Date to: Circa 2100 BC
Dimensions and weight
Quantity: 1
Length: 33.1 mm
Width: 19.4 mm
Thickness: 6.5 mm
Weight: 3.95 g
Discovery dates
Date(s) of discovery: Sunday 20th March 2016 - Sunday 20th March 2016
Personal details
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Materials and construction
Primary material: Flint
Manufacture method: Knapped/flaked
Completeness: Incomplete
Spatial metadata
Region: South West (European Region)County or Unitary authority: Cornwall (Unitary Authority)
District: Cornwall (Unitary Authority)
Parish or ward: St. Minver Highlands (Civil Parish)
Spatial coordinates
4 Figure: SW9675
Four figure Latitude: 50.53910432
Four figure longitude: -4.88032158
1:25K map: SW9675
1:10K map: SW95SE
Grid reference source: From finder
Unmasked grid reference accurate to a 1 metre square.
References cited
| Author | Publication Year | Title | Publication Place | Publisher | Pages | Reference | |
|---|---|---|---|---|---|---|---|
| Bond, C. | 2005 | PAS Guide to the Identification, Assessment and Recording of Lithics | London | The Portable Antiquities Scheme | 137, fig.5.124 | no.F24 | |
| Butler, C. | 2005 | Prehistoric Flintwork | Stroud | The History Press | 131, fig.55 | no.3 | |
| Mercer, R.J. | 1981 | Excavations at Carn Brea, Illogan, Cornwall, 1970-73 | Callington | Penwell Ltd. | 143, fig.63 | no.L203 |
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Timeline of associated dates
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