Replying as the lab coordinator for the molino project they're a lead and
copper alloy, the rivets themselves seem to have a slightly higher amount of
copper than the washers
Jennifer

On Jun 6, 2011 11:39 AM, "Susan Walter" <[log in to unmask]> wrote:
> We have those too.
> Ours are from an adobe later used as a cowboy bunkhouse.
>
> However, regarding the V shaped spacer like things - our are not
> brass/copper they appear to be a lead based metal. Are your V shaped
things
> indeed cuprous?
>
> ----- Original Message -----
> From: "John Worth" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, June 04, 2011 4:46 AM
> Subject: Copper alloy rivets
>
>
>> Dear all,
>> I'd appreciate some help dating and identifying some copper-alloy rivets
>> we
>> have found on an 18th-century Florida mission site (Mission San Joseph de
>> Escambe, c1741-1761) which also has a nearby late 19th-century sawmill
>> (c1866-1884) which could also be associated with these items. Perhaps a
>> dozen sets of these rivets and washers were found in the upper level of a
>> single 1x1m unit at this pristine, unplowed site, in the immediate
>> vicinity
>> of a large post-on-sill wall trench structure we have tentatively
>> identified
>> as the Spanish cavalry barracks built in 1760 (the site was garrisoned
for
>> a
>> little over a year and a half; project blog linked below for additional
>> context about the site).
>>
>> Here is the link to the photos on Flickr:
>> http://www.flickr.com/photos/pensacolacolonialfrontiers/
>>
>> The shafts of the rivets are smooth, and the heads are plain except for
>> one
>> with a raised star, shown in one of the pictures.
>>
>> Thanks,
>> John Worth
>>
>> --
>> John E. Worth, Ph.D.
>> Assistant Professor, Department of Anthropology
>> University of West Florida, 11000 University Parkway, Pensacola, FL 32514
>> Phone: (850) 857-6204 Fax: (850) 857-6278
>> Email: [log in to unmask]
>> Home Page: http://www.uwf.edu/jworth
>> Graduate Advising Resource Page:
>> http://www.uwf.edu/jworth/teaching.htm#Advisement
>> 2011 Field School Blog: http://pensacolacolonialfrontiers.blogspot.com/
>
>
>
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