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
26 Mar-01:40:14 The mizunaka collection - quartz (Am Mizunaka)
25 Mar-18:18:58 Re: cr-rich green tremolite (Bob Harman)
25 Mar-17:44:54 Re: cr-rich green tremolite (Susan Robinson)
25 Mar-16:23:55 Re: cr-rich green tremolite (R Saunders)
25 Mar-13:55:39 Re: cr-rich green tremolite (Susan Robinson)
25 Mar-13:25:58 Re: franjungle collection (Firmo Espinar)
25 Mar-11:26:14 Re: quartz collecting outings in south africa (Pierre Joubert)
25 Mar-10:43:34 Re: quartz collecting outings in south africa (Heimo Hellwig)
25 Mar-10:30:50 Re: quartz collecting outings in south africa (Pierre Joubert)
25 Mar-10:27:41 Re: quartz collecting outings in south africa (Pierre Joubert)
25 Mar-08:53:04 Re: collection of michael shaw (Crosstimber)
25 Mar-08:52:07 Re: cr-rich green tremolite (Jonathan Zvonko)
25 Mar-08:32:13 Re: collection of enrique llorens (Enrique Llorens)
25 Mar-06:56:49 Re: a mineralogical trip through the states of usa - new york (Pierre Joubert)
25 Mar-06:52:34 Re: carlos pareja photo collection (Pierre Joubert)
25 Mar-05:46:56 Re: collection of enrique llorens (Susan Robinson)
25 Mar-05:40:43 Re: cr-rich green tremolite (Susan Robinson)
25 Mar-04:35:24 Cr-rich green tremolite (R Saunders)
25 Mar-02:21:27 Re: collection of enrique llorens (Enrique Llorens)
25 Mar-00:15:28 Re: collection of heimo hellwig (Heimo Hellwig)
24 Mar-16:32:33 Re: collection of enrique llorens (Enrique Llorens)
24 Mar-13:03:41 Re: don lum collection (Don Lum)
24 Mar-06:33:05 Re: carlos pareja photo collection (Carlos Pareja)
23 Mar-17:02:47 Re: don lum collection (Don Lum)
23 Mar-16:38:41 Re: women's private collection sub-forum (J. G. Alcolea)

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
53101


The time now is Mar 26, 2019 04:06

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
Calcite Kongsberg Norway
  
  Index -> What is it? - Where is it from?
Like
2


View previous topic :: View next topic  
Author Message

Mathias




Joined: 01 Apr 2018
Posts: 67
Location: Vlodrop

View user's profile

Send private message

PostPosted: Sep 01, 2018 08:51    Post subject: Calcite Kongsberg Norway  

Hi, it's me again with another specimen that raises questionsů. I hope you don't mind.

I bought this specimen recently, as part of a small collection which I purchased.
The label says: Calcite - Kongsberg, Norway.

Can anybody confirm that this type of crystallization is know for Kongsberg specimens?
Again on Mindat or even google I was not able to find comparable specimen.


Thanks,

Mathias



DSC01935.JPG
 Locality:
Kongsberg mining District, Kongsberg, Buskerud, Norway
 Description:
 Viewed:  1068 Time(s)

DSC01935.JPG


Back to top
Reply to topic Reply with quote
Like
   

Kevin Schofield




Joined: 05 Jan 2018
Posts: 75
Location: Beacon NY

View user's profile

Send private message

PostPosted: Sep 01, 2018 09:34    Post subject: Re: Calcite Kongsberg Norway  

Mathias wrote:
Hi it's me again with another specimen that raises questionsů. I hope you don't mind.

I bought this specimen recentlt, as part of a small collection which I purchased.
The label says: Calcite Kongsberg Norway.

Can anybody confirm that this type of crystallization is know for Kongsbers specimen?
Again on Mindat or even google I was not able to find comparable specimen.


Thanks,

Mathias


Hi Mathias,

how big is it?...your background is a little nondescript.

I have also never seen a hexagonal form from Kongsberg (but that of course does not rule it out!). Having said that it does have more the look of a classic St Andreasberg German calcite...

_________________
Veni, Vidi, Emi
Back to top
Reply to topic Reply with quote
Like
   

Mathias




Joined: 01 Apr 2018
Posts: 67
Location: Vlodrop

View user's profile

Send private message

PostPosted: Sep 01, 2018 10:20    Post subject: Re: Calcite Kongsberg Norway  

Hi Kevin thanks for your remarks;

I forgot to mention the size, it is rather small; length about 4 cm, and the "diameter" of the hexagonal is about 2 cm.

Best regards and thanks again,

Mathias
Back to top
Reply to topic Reply with quote
Like
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 196
Location: Prague

View user's profile

Send private message

PostPosted: Sep 01, 2018 13:07    Post subject: Re: Calcite Kongsberg Norway  

As a fan of Norwegian Minerals, I happen to have the ultimate book on Norwegian Minerals...and under Calcite it does mention the hexagonal habit found rarely at Kongsberg, but says that when found they are, they are rarely larger than 1-2 mm high. So, possible - but it would be unusually large from that locality in that habit! I also would ask you to find out more about the matrix it is sitting in. I have collected at Kongsberg and seen many museum specimens, and don't remember anything looking like that matrix - but may just not remember. If it is from Kongsberg, it is most likely [but not necessarily] from the Bratteskjerpet mine with that habit.

However, this 'old collection' you seem to have just obtained either contained some very rare minerals/localities/habits, or they labeled it to appear so..... If the former, you are indeed a very lucky person. I don't know how many pieces there were in this collection you purchased, but the 'deep sea' nodule turned out not to be....I personally am a bit suspicious of the native-Fe being that, and while hexagonal calcite has been found in Kongsberg, they are usually quite small. Did you buy this collection from a reputable dealer or collector? I don't mean to 'rain on your parade', but of three of the four you've posted about, I'm somewhat skeptical - but could be wrong. The Mn-oxide was surely not from the sea. Might you show us some photos of the labels or is there a list of what the minerals were and from? I find it anomalous that such high quality specimens would have such general locations or mistaken locations. It is true, however, that some really old collections didn't have the rigor we expect today on labels.
Back to top
Reply to topic Reply with quote
Like
2
   

Mathias




Joined: 01 Apr 2018
Posts: 67
Location: Vlodrop

View user's profile

Send private message

PostPosted: Nov 25, 2018 13:25    Post subject: Re: Calcite Kongsberg Norway  

The calcite specimen could originate from:
Dalen-Kj°rholt Mine, Kj°rholt, Brevik, Porsgrunn, Telemark, Norway
This is not far away from Kongsberg, and similar calcites come from that locality.
Kongsberg may just indicate a region and the specific place of origin.
Regards
Mathias
Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> What is it? - Where is it from?   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 ę Forum FMF 2006-2019


Powered by FMF