[Jewelry making - Article 00708] - Re: [Orchid] Oxidation or patination?

[Kevin Whitmore]

========[ Invite a Friend - http://www.ganoksin.com/invite.htm  ]========

Thanks Eileen,

    It is confusing. Sorry I helped further the confusion. Captain was
    correct, I misspoke - it is accurate to say something has been
    oxidized, even when no oxygen is present. It is also accurate to say
    that it is not oxide on an antiqued or tarnished piece of sterling.
    The darkening is almost always a sulfide. The initial post referred
    to keeping steel shot under water to prevent rusting, and compared
    that to oxidation. In the case of rust, the metal is reacting with
    oxygen. In the case of inadvertent patination while under water, the
    metal is likely reacting with sulfur. 

Kevin Whitmore
Rio Grande
7500 Bluewater Road NW
Albuquerque, NM 87121
USA
(505) 839-3114 (voice)
(505) 839-3135 (fax)
kevin.whitmore AT tbg.riogrande.com

____________________________________________________________________
T h e   O r c h i d   L i s t
Open Electronic Forum for Jewelry Manufacturing Methods and Procedures
____________________________________________________________________
Orchid FAQ:
~ http://www.ganoksin.com/orchid/faq.htm
Orchid Archives:
~ http://www.ganoksin.com/orchid/archive
Orchid Galleries:
~ http://www.ganoksin.com/orchid/gallery.htm
Invite a Friend:
~ http://www.ganoksin.com/invite.htm
____________________________________________________________________
Tips From The Jeweler's Bench - Article Archive
~ http://www.ganoksin.com/borisat/tip_sear.htm
The Jeweler's Selected Bibliography List
~ http://www.ganoksin.com/jewelry-books
Buy Orchid Jewelry:
~ http://www.ganoksin.com/shop
____________________________________________________________________
-Unsubscribe:
-Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank
____________________________________________________________________