NMNH A287172: Gold Plated Copper Images. Two Connected Figu

Primary Title:
NMNH A287172: Gold Plated Copper Images. Two Connected Figu
Alternate Title: Owner Object Name
Gold Plated Copper Images. Two Connected Figu
Keyword Type: Object Class
Pendant
Keyword Type: Object Sub-class
Anthro
Keyword Type: Owner Provenience Record Type
Accession docs/letters
Keyword Type: Exam Methods
Visual Microscopy
Identifier: Object Number
NMNH A287172-0
Identifier: Owner Accession Number
A287172-0
Identifier: Owner Catalog Number
058333
Note: Owner Information Source
PreColumbian Master; Panama Gold
Note: Object Description
open back cast anthropomorphic pendant with 2 anthropomorphic figures with cast wire/scroll work decoration. 2 suspension rings on back
Note: Owner Accession
3 metal objects (one of gold and two of copper gilt) from Chiriqui, province of Panama, South of boundary of Costa Rica. Purchased from C.H. Soar Order # 57337. $55.00. The above were forwarded from San Francisco by the Dr. Walter Hough, and are excellent examples of the metal work of the ancient peoples
Note: Research Notes
Museum purchased from Henry Soar in 1915. No reference to who excavated them. Cannot yet find info on Soar
Note: Bibliographic References
Exhibit Hall 23 9-17-74
Note: Condition Review
many areas broken off. Fragile. Medium green to emerald green corrosion. Interior metal appears mineralized in places (bottom proper right corner has black interior). Appears to have been cleaned and the corrosion removed in the past as there are holes where heavy mineralization may have been removed.
Note: Follow-up Notes
There are several exposed cross sections. An area at the PR top is already broken and could be sampled easily XRF: analyze body, bottom, and wire (coppery colored)
Note: Analysis Recommendations
XRF ESEM-EDS Metallography X-ray radiograph
Time Period: Owner Accession Date
1915
Time Period: Examination Date
11/10/2008
Place: Object Origin
Geographic Zone: VGC-Pacific, south of boundary of Costa Rica Country: Panama Province: Chiriqui Site: Place Time Period: Site Period
Place: Curation Location
Local place: 1103A00403
Actor: Object Excavator
C.H.Soar
Actor: Owner Accession Source
Soar, Charles Henry; 1915; Purchase; 3 specimens
Actor: Object Owner
NMNH
Actor: Examination Operator
ACH
Condition: Corrosion
Note: Green-core; Black-ore; Green-Surface. Medium green to emerald green corrosion. Interior metal appears mineralized in places (bottom proper right corner has black interior). Appears to have been cleaned and the corrosion removed in the past as there are holes where heavy mineralization may have been removed.
Condition: Coloration
Note: Coppery; Gold; Green corrosion. Areas of exposed cross sections show copper colored interior, contrasting with the gold colored surface. There are a few surface areas that are more copper colored, especially at the tops of the wires
Condition: Usewear Toolmarks
Note: Scratches. Under microscope, regular unidirectional striations visible either from cleaning or polishing.
Condition: Pseudomorphs
Note: None
Materials:
Gold Alloy Note: Coppery interior and gold exterior with small amount of green corrosion present. Some abrasion on the gold surface reveals more coppery surface underneath.
Technique: Fabrication Method
Cast- Open Back Hammered-Sheet Note: Open back cast. Porous, pitted surface on back from casting. Some facets visible on the flat section at the bottom could possibly be from hammering (see photo)
Technique: Joinery
Note: All cast. No evidence of joinery outside of wax model
Technique: Finishing
Note: All in wax model Polished Surface Enrichment. The front surface appears burnished and has some regular, unidirectional striations. The back is less compact. Some abrasion on the gold surface reveals more coppery surface underneath and break edges show mineralization at core but not surface.
Measurements:
Type:Number of Components Value:1 Units:components
PIDTypeTitleMetadataURL
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si_2768902A287172_b_20081112_ach for pid si_2768902A287172_b_20081112_achDownload
si_2768903A287172_c_20081112_ach for pid si_2768903A287172_c_20081112_achDownload
si_2768904A287172_d_20081112_ach for pid si_2768904A287172_d_20081112_achDownload
si_2768905A287172_e_20081112_ach for pid si_2768905A287172_e_20081112_achDownload
si_2768906A287172_f_20081112_ach for pid si_2768906A287172_f_20081112_achDownload
si_2768907A287172_02dec08_XRF1a for pid si_2768907A287172_02dec08_XRF1aDownload
si_2768908A287172_02dec08_XRF2 for pid si_2768908A287172_02dec08_XRF2Download
si_2768909A287172_145Kv_03_04_09-adj for pid si_2768909A287172_145Kv_03_04_09-adjDownload
si_568e851568ff0CSV iconAnalysis Results (NMNH 2871720)Download