NMAI 008206: Disc

Primary Title:
NMAI 008206: Disc
Alternate Title: Owner Object Name
Disc
Keyword Type: Object Class
Disk
Keyword Type: Object Sub-class
Plaque
Keyword Type: Exam Methods
Visual Microscopy
Identifier: Owner Accession Number
NMAI 008206.000
Note: Owner Information Source
PreColumbian Master; Panama Gold
Note: Object Description
Round disk 11cm diam., 0.010"-0.011" thick. Convex/concave circle at center with 11mm flat rim around circumference. The numbered, concave side is highly polished, the un-numbered, convex side is shiny but not as highly polished. There are two holes punched from the numbered side (front?) to the un-numbered side (back?) as the burrs are still present on the back. 25.2g
Note: Owner Accession
Central America, Panama, Bocas del Toro Province, Bocas del Toro District, Bocas del Toro
Note: Condition Review
There are several cracks on the edges and a loss along the edge at the PL side of the front. There are also two bends in the bottom that are scratched/ incised on the front side. The large crack at the edge at two oclock has a square patch of the surface removed from the back.
Note: Analysis Recommendations
XRF X-ray radiograph
Time Period: Owner Accession Date
1906
Time Period: Examination Date
12/15/2008
Place: Object Origin
Geographic Zone: VGC-Caribbean, Bocas del Toro District Country: Panama Province: Bocas del Toro Province Site: Place Time Period: Site Period
Place: Curation Location
Local place: CRC
Actor: Object Excavator
Dissette, George C.
Actor: Owner Accession Source
Dissette, George C. (Collected, 1/1/1906)
Actor: Object Owner
NMAI
Actor: Examination Operator
ACH
Condition: Corrosion
Note: There is some mottling, either tarnish or oxidation from heating/annealing
Condition: Coloration
Note: Coppery colored gold
Condition: Usewear Toolmarks
Note: Burrs still present at punch holes on back and cracks along edges from work hardening
Condition: Pseudomorphs
Note: None
Materials:
Gold Alloy
Technique: Fabrication Method
Hammered-Sheet Note: There is a lot of evidence of hammering flaws, which are shear fractures caused by work hardening without annealing. There are cracks along the edges which also are indicative of work hardening.
Technique: Finishing
Note: polished. The burrs on the back are not highly finished
Measurements:
Type:Diameter Value:11c Units:mm Type:Number of Components Value:1 Units:components
PIDTypeTitleMetadataURL
si_2770103008206 x1 DSC_5151 for pid si_2770103008206 x1 DSC_5151
TitleInfo/title
008206 x1 DSC_5151
Abstract
NMAI 8206 overall, unnumbered side - with XRF (2008 ElvaX) analysis spot #1 indicated
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si_2770104008206 17dec08 ach DSC_5094 for pid si_2770104008206 17dec08 ach DSC_5094
TitleInfo/title
008206 17dec08 ach DSC_5094
Abstract
NMAI 8206 overall, numbered side (2008)
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si_2770105008206 17dec08 ach DSC_5095 for pid si_2770105008206 17dec08 ach DSC_5095
TitleInfo/title
008206 17dec08 ach DSC_5095
Abstract
NMAI 8206 overall, numbered side (2008)
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si_568e851552ff0CSV iconAnalysis Results (NMAI 8206)
Idinfo/citation/citeinfo/origin
ACH
Idinfo/citation/citeinfo/pubdate
Unpublished material
Idinfo/citation/citeinfo/title
Analysis Results (NMAI 8206)
Idinfo/citation/citeinfo/geoform
tabular digital data
Idinfo/timeperd/timeinfo/rngdates/begdate
12/15/2008
Idinfo/timeperd/current
observed
Idinfo/status/progress
Done
Idinfo/status/update
As Needed
Idinfo/keywords/theme/themekt
None
Idinfo/keywords/place/placekt
None
Idinfo/keywords/stratum/stratkt
None
Idinfo/keywords/temporal/tempkt
None
Idinfo/taxonomy/keywtax/taxonkt
None
Idinfo/taxonomy/keywtax/taxonkey
None
Idinfo/taxonomy/taxonsys/classsys/classcit/citeinfo/pubdate
Unpublished material
Idinfo/taxonomy/taxonsys/classsys/classcit/citeinfo/geoform
database
Idinfo/taxonomy/taxoncl/taxonrn
Species
Idinfo/taxonomy/taxoncl/taxonrv
Unknown
Idinfo/taxonomy/taxoncl/common
Unknown
Idinfo/secinfo/secclass
Sensitive
Dataqual/lineage/method/methodid/methkt
None
Dataqual/lineage/method/methodid/methkey
None
Dataqual/lineage/method/methdesc
Visual Microscopy
Dataqual/lineage/method/methdesc[2]
Analysis: XRF X-ray radiograph
Spdoinfo/direct
Point
Spdoinfo/rastinfo/rasttype
Voxel
Spref/horizsys/geograph/geogunit
Decimal degrees
Spref/vertdef/altsys/altunits
feet
Spref/vertdef/altsys/altenc
Explicit elevation coordinate included with horizontal coordinates
Spref/vertdef/depthsys/depthem
Attribute values
Eainfo/detailed/attr/attrmfrq
Unknown
Distinfo/distrib/cntinfo/cntaddr/addrtype
Mailing
Metainfo/metc/cntinfo/cntaddr/addrtype
Mailing
Metainfo/metstdn
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
Metainfo/metstdv
1999
Metainfo/metsi/metsc
None
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