We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences

FMF English Forum is moderated by John S. White and Peter Megaw
 

Spanish message board






Newest topics and users posts
18 Apr-19:00:11 Re: hi, let introduce myself (Don Lum)
18 Apr-18:48:38 Re: death of heimo hellwig (Vinoterapia)
18 Apr-17:57:53 Re: women's private collection sub-forum (Debbie Woolf)
18 Apr-17:49:31 Re: death of heimo hellwig (Susan Robinson)
18 Apr-16:50:04 Re: collection of richard & jensa arseneau - crocoite (Richard Arseneau)
18 Apr-16:26:40 Re: hi, let introduce myself (Richard Arseneau)
18 Apr-16:23:44 Re: death of heimo hellwig (Debbie Woolf)
18 Apr-15:39:06 Hi, let introduce myself (Bontix77)
18 Apr-15:09:45 Re: what is this? another one (Bontix77)
18 Apr-15:01:51 Re: death of heimo hellwig (Firmo Espinar)
18 Apr-14:54:19 Re: death of heimo hellwig (Bob Harman)
18 Apr-14:53:26 Re: death of heimo hellwig (Don Lum)
18 Apr-14:44:25 Re: death of heimo hellwig (Crosstimber)
18 Apr-14:31:40 Re: death of heimo hellwig (Pierre Joubert)
18 Apr-14:31:29 Re: death of heimo hellwig (Philippe Durand)
18 Apr-14:21:26 Death of heimo hellwig (Pierre Joubert)
18 Apr-14:02:13 Re: help identifying metal (Pete Richards)
18 Apr-13:30:04 Re: help identifying metal (Mikehancho)
18 Apr-13:03:48 Re: help identifying metal (Pete Richards)
18 Apr-12:46:40 Re: what is this? another one (Kevin Conroy)
18 Apr-12:04:39 Can you help idendify? (Redfoxmoosefamily)
18 Apr-11:50:21 Re: help identifying metal (John Cesar)
18 Apr-09:47:17 Re: help identifying metal (Pete Richards)
18 Apr-09:46:33 Re: what is this? (Bontix77)
18 Apr-09:10:32 Re: help identifying metal (Mikehancho)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
54030


The time now is Apr 18, 2019 19:24

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Cr-rich green Tremolite
  
  Index -> Conserving, Preparing and Cleaning Minerals
Like


View previous topic :: View next topic  
Author Message

R Saunders




Joined: 28 Jul 2018
Posts: 47
Location: Michigan


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Mar 25, 2019 04:35    Post subject: Cr-rich green Tremolite  

Cr-rich green Tremolite with lot's of stuff holding it all together. I realize this is not a lapidary forum, is it feasible to grind or ultra sonic away a lot of the matrix to improve the looks, wouldn't mind a few smaller pieces for display. Hall Farm.


P1000567d.jpg
 Mineral: Cr-rich green Tremolite
 Locality:
Gouverneur Marble Company Quarry, Gouverneur, St. Lawrence County, New York, USA
 Dimensions: 127 mm x 101 mm x 63.5 mm
 Description:
 Viewed:  568 Time(s)

P1000567d.jpg



P1000569.jpg
 Mineral: Cr-rich green Tremolite
 Description:
 Viewed:  562 Time(s)

P1000569.jpg


Back to top
Reply to topic Reply with quote
Like
   

Susan Robinson




Joined: 05 Aug 2010
Posts: 152
Location: Hancock, MI

View user's profile

Send private message

PostPosted: Mar 25, 2019 05:40    Post subject: Re: Cr-rich green Tremolite  

Iron Out will remove a lot of the iron oxide stains, or you could use muriatic acid. If part of the matrix is marble/calcite, then the acid will attack it, resulting (maybe) in several smaller specimens, if they are unattached to the entire mass. The amphibole crystals under the calcite should be sharper and less-weathered, since the calcite protected them.
_________________
Susan Robinson
Back to top
Reply to topic Reply with quote
Like
   

jonathan zvonko




Joined: 31 Dec 2018
Posts: 1
Location: Quebec

View user's profile

Send private message

PostPosted: Mar 25, 2019 08:52    Post subject: Re: Cr-rich green Tremolite  

What is the locality? Looks similar to specimens I collected in Ontario. As Susan said Rust Out or Iron Out are two products on the market sold in plumbing supplies and both will soften and remove the iron containing soil and oxidized coatings, After that I used soda blasting for a final good shiny look. I do not like the hydrochloric acid, since the amphibole is hard you can remove some calcite manually so the natural look will be preserved.
Back to top
Reply to topic Reply with quote
Like
   

Susan Robinson




Joined: 05 Aug 2010
Posts: 152
Location: Hancock, MI

View user's profile

Send private message

PostPosted: Mar 25, 2019 13:55    Post subject: Re: Cr-rich green Tremolite  

The specimen of tremolite crystals does not look as though it had chromium in it, since the green is not the right color. The only places that have produced Cr-tremolite in St. Lawrence Co. are the Balmat District and a locality in the township of Macomb. The marble quarries in the Gouverneur area did not have tremolite crystals like this in them, but your specimen may have occurred in the calc-silicate rock which is in association with the Gouverneur marble at the Hall farm locality.
_________________
Susan Robinson
Back to top
Reply to topic Reply with quote
Like
   

R Saunders




Joined: 28 Jul 2018
Posts: 47
Location: Michigan


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Mar 25, 2019 16:23    Post subject: Re: Cr-rich green Tremolite  

I only used the Cr-rich seeing it applied in a different post. I will correct my records thanks. I bought it at my club shop silent auction. It was collected by a member and the slip only say's Hall Farm, North Gouverneur, NY Thanks for the location, I will enter it and make card for it. I do have Iron Out powder from the hardware. Also how do you tell Chromium rich?
Bob
Back to top
Reply to topic Reply with quote
Like
   

Susan Robinson




Joined: 05 Aug 2010
Posts: 152
Location: Hancock, MI

View user's profile

Send private message

PostPosted: Mar 25, 2019 17:44    Post subject: Re: Cr-rich green Tremolite  

Cr-rich tremolite has a much brighter green color, almost like someone soaked the crystals in creme de menthe liqueur. Look up "Cr-tremolite, Washburn farm, Macomb, NY" on Mindat or even "Cr-tremolite, Balmat, NY". You'll see the difference in the green color. The famous locality at Outokumpu, Finland, produced Cr-rich diopside crystals, too.

I hope this information is helpful.

_________________
Susan Robinson
Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 505
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Mar 25, 2019 18:18    Post subject: Re: Cr-rich green Tremolite  

For a quick idea, look at my self collected example on the NY page 2 (July 2016) of "a mineralogical trip thru the states of the USA" on this website. BOB
Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> Conserving, Preparing and Cleaning Minerals   All times are GMT - 5 Hours
Page 1 of 1
    

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2019


Powered by FMF