CJD M-039: Wire, metal

Primary Title:

CJD M-039: Wire, metal

Alternate Title: Owner Object Name

aro de metal

Keyword Type: Object Class

ring

Keyword Type: Exam Methods

Wild microscope

Identifier: Object Number

CJD M-39

Identifier: Owner Accession Number

CJD-M-039

Note: Owner Information Source

PreColumbian Master; MCI PNA Gold

Note: Object Description

STRI Excel: aro de metal (hoop) Catálogo de INAC: 9136 Ring with knot, 0.4 g in wt., that appears to be cast copper wire then plated with silver rich layer. Wire is 1.1-1.2 diameter. 10.4 mm inside diameter of ring. 12.8 outside diameter of ring. Overall dimensions of knot: 5.25 x 8.4 mm. Two ends of wire are exposed at either sides of square knot, diagonally opposite to each other. There is possible evidence of joining of the wire, possibly with solder where it overlaps in the knot but this area could also be a casting flange, indicating that it was more likely cast from wax model.

Note: Condition Review

Surface has uneven layer of excavation soil, reddish brown in color. Below soil is silver layer, granular and porous with significant amount of intermittent black corrosion (silver sulfide?).

Note: Housing Notes

Rebagged in polyethylene ziplock bag with Tyvek tag insert. The object was stabilized inside the bag in a purpose-built ethafoam cavity-mount.

Time Period: Conservation Date

7/27/2007

Time Period: Examination Date

7/27/2007

Time Period: Conservation Record Creation Date

7/13/2007

Time Period: Conservation Record Last Modification Date

7/27/2007

Place: Object Origin

Geographic Zone: Country: Panamá Province: Los Santos Site: Cerro Juan Díaz Place Time Period: Site Period

Place: Curation Location

Local place: STRI-Ancón

Actor: Object Owner

INAC

Actor: Examination Operator

K Cobb + EGH, HFB, CMP, TLH

Actor: Conservation Operator

C Pohl and T Hornung

Condition: Usewear Toolmarks

Note: no visible tool marks. Ends of wire are somewhat rounded. No solder seam or join area visible at bottom of ring.

Context: Excavation Context

in a burial (stone cyst, extended), dentine date ~1530

Technique: Fabrication Method

rod/wire Note: Round wire ring with wire forming four-sided knot at top. Ring is made from one continuous piece of wire, which contains copper. There is a surface layer of silver-rich metal that is very granular and pitted. Layer appears as distinct layer on substrate metal-there is no visible evidence of silver in substrate. Kim thinks it is applied as a plating (electrochemical?)-appears to coat or overlap areas that have been soldered.

Technique: Joinery

Note: No solder seam visible at bottom of ring (no visible joining)

Treatment: Conservation Performed

Surface cleaned/degreased with acetone on cotton swab

PID	Type	Title	Metadata	URL
si_2763793		039 27jul07 DSC_6889	TitleInfo/title 039 27jul07 DSC_6889 Abstract CJD M-39 overall	Download
si_2763794		039 27jul07 DSC_6894	TitleInfo/title 039 27jul07 DSC_6894 Abstract CJD M-39 overall	Download
si_2763795		039 13jul07 DSC_6163	TitleInfo/title 039 13jul07 DSC_6163 Abstract CJD M-39 overall	Download
si_568e851422dc0		Analysis Results (CJD M-39)	Idinfo/citation/citeinfo/origin K Cobb + EGH, HFB, CMP, TLH Idinfo/citation/citeinfo/pubdate Unpublished material Idinfo/citation/citeinfo/title Analysis Results (CJD M-39) Idinfo/citation/citeinfo/geoform tabular digital data Idinfo/timeperd/timeinfo/rngdates/begdate 7/27/2007 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 Wild microscope Dataqual/lineage/method/methdesc[2] Analysis: 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	Download