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


Spanish message board






Newest topics and users posts
04 Mar-05:13:53 Re: locality for mexican quartz specimens (James Catmur)
04 Mar-04:56:59 Re: collection of jean suffert (Jean Suffert)
04 Mar-04:19:20 Re: collection of jean suffert (Jean Suffert)
04 Mar-03:47:58 Re: collection of jean suffert (Jean Suffert)
04 Mar-03:08:26 Re: the mizunaka collection - quartz pseudomorph (Tobi)
04 Mar-03:03:49 Re: beautiful durable and...common? (Lluis)
04 Mar-03:00:13 Re: collection of jean suffert (Tobi)
04 Mar-02:56:32 Re: new generation for picture - ploum (Tobi)
04 Mar-02:54:07 Re: popular minerals - octahedral fluorite from shangbao mine, china (Tobi)
04 Mar-02:50:53 Re: collection of michael shaw (Tobi)
03 Mar-21:09:37 Re: locality for mexican quartz specimens (Brent Lockhart)
03 Mar-20:51:38 Re: locality for mexican quartz specimens (Peter Megaw)
03 Mar-20:24:39 Locality for mexican quartz specimens (Brent Lockhart)
03 Mar-17:04:41 Re: alabama copper? quartz or quartzite and red to almost green mineral along with?? (Rforbus)
03 Mar-16:25:53 The mizunaka collection - quartz pseudomorph (Am Mizunaka)
03 Mar-16:22:27 Re: collection of sante celiberti (Sante Celiberti)
03 Mar-15:27:31 Re: beautiful durable and...common? (Steveb)
03 Mar-13:14:23 Re: alabama copper? quartz or quartzite? big sur jade? almost green mineral along with?? (Rforbus)
03 Mar-11:57:25 Re: alabama copper? quartz or quartzite and red to almost green mineral along with?? (Rforbus)
03 Mar-11:25:00 Re: alabama copper? quartz or quartzite and red to almost green mineral along with?? (Bob Carnein)
03 Mar-10:52:54 Re: beautiful durable and...common? (James Catmur)
03 Mar-09:58:56 Re: collection of jean suffert (Jean Suffert)
03 Mar-09:40:39 Re: beautiful durable and...common? (Tom Mazanec)
03 Mar-09:30:14 Re: a gemstone christmas (Tom Mazanec)
03 Mar-05:05:09 Re: collection of volkmar stingl (Volkmar Stingl)

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
79244


The time now is Mar 04, 2021 10:21

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
Is that Goethite? Value?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
Like
3


View previous topic :: View next topic  
Author Message

Milkman94




Joined: 15 Dec 2020
Posts: 3

View user's profile

Send private message

PostPosted: Dec 15, 2020 10:01    Post subject: Is that Goethite? Value?  

Hello everybody, I would appreciate if you could help me confirm if this is Goethite or identify this mineral, it's pretty heavy, around 25-30 kg and I would like to know its value! Thank you in advance.


DSC_0749.JPG
 Mineral: Goethite ?
 Dimensions: 40x30 cm
 Description:
 Viewed:  1647 Time(s)

DSC_0749.JPG



DSC_0745.JPG
 Description:
 Viewed:  1649 Time(s)

DSC_0745.JPG


Back to top
Reply to topic Reply with quote
Like
   

John Betts




Joined: 07 Jun 2012
Posts: 186
Location: New York City

View user's profile

Send private message

PostPosted: Dec 15, 2020 10:25    Post subject: Re: Is that Goethite? Value?  

What color is the streak? Red-brown? Black?
Hardness? Will it scratch fluorite?

(Simple, basic tests can help narrow the possibilities...)

_________________
John Betts
Back to top
Reply to topic Reply with quote
Like
   

Vinoterapia




Joined: 03 Feb 2009
Posts: 176
Location: Houston, Tx


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Dec 15, 2020 10:32    Post subject: Re: Is that Goethite? Value?  

In this forum we do not provide value estimates,

Furthermore, considering the looks and weight, I would say that the sample probably is a slag from a smelter.
Back to top
Reply to topic Reply with quote
Like
1
   

Milkman94




Joined: 15 Dec 2020
Posts: 3

View user's profile

Send private message

PostPosted: Dec 15, 2020 10:36    Post subject: Re: Is that Goethite? Value?  

Well it's pretty hard, I have no knowledge of minerals.. the "bubbles" are black and around its orange-brownish maybe towards the color of rust kinda. Thank you for replying.


DSC_0748.JPG
 Mineral: Goethite
 Description:
 Viewed:  1613 Time(s)

DSC_0748.JPG



DSC_0747.JPG
 Description:
 Viewed:  1613 Time(s)

DSC_0747.JPG


Back to top
Reply to topic Reply with quote
Like
   

Bob Harman




Joined: 06 Nov 2015
Posts: 722
Location: Indiana


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Dec 15, 2020 10:45    Post subject: Re: Is that Goethite? Value?  

While this forum doesn't provide values, what you have actually does have 2 values.
The first is to you, because it tweaked your curiosity.
The second is what anyone else might be willing to pay you to own what you now have.
Back to top
Reply to topic Reply with quote
Like
   

Milkman94




Joined: 15 Dec 2020
Posts: 3

View user's profile

Send private message

PostPosted: Dec 15, 2020 10:48    Post subject: Re: Is that Goethite? Value?  

Mhmm thank you for your replies even though values are not provided over here! Much appreciate every info I could get on it!
Back to top
Reply to topic Reply with quote
Like
   

Peter Lemkin




Joined: 18 Nov 2016
Posts: 316
Location: Prague

View user's profile

Send private message

PostPosted: Dec 15, 2020 11:02    Post subject: Re: Is that Goethite? Value?  

John Betts wrote:
What color is the streak? Red-brown? Black?
Hardness? Will it scratch fluorite?

(Simple, basic tests can help narrow the possibilities...)


You have to do some exploration if you want to know what it is. However, just from the photos it doesn't look likely to me to be goethite - but do some tests and compare it to photos of goethite on a website such as mindat.org [remembering these will usually be top specimens - but not all].

We appraise type, rarety, crystal habit features, give ideas and hints, but do not do appaisals of 'street' value. Anyway, those vary widely on most specimens. What it is worth to you is most important. Anyway, you want to know what it is, so do some testing, as John suggested.
Back to top
Reply to topic Reply with quote
Like
   

alfredo
Site Admin



Joined: 30 Jan 2008
Posts: 833


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Dec 15, 2020 15:15    Post subject: Re: Is that Goethite? Value?  

Milkman, There is no definable fixed value for a mineral specimen. You can't eat it, you can't cut it for jewelry, it's too little to use as iron ore, so the only commercial value it has depends on whether some mineral collector loves it enough to want to acquire it from you, and it is often not easy to find such a person, and impossible to predict what someone will want to pay for it. "Asking" price can be anything at all - Some dealer might put it out on their table for $1 and never sell it, another dealer might put it out for $100 and make up some story about how wonderful and magical it is and bamboozle someone into buying it. Unpredictable. That's why we don't do valuations on this forum, not because we are unhelpful by nature, but because whatever potential price is stated, whether high or low, someone is always unhappy with the answer. For our own peace and tranquillity it's best to stay away from that topic.
Back to top
Reply to topic Reply with quote
Like
2
   

James Catmur
Site Admin



Joined: 14 Sep 2006
Posts: 811
Location: Cambridge


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Dec 15, 2020 15:57    Post subject: Re: Is that Goethite? Value?  

Here are a few tests you can do

Hardness and streak (7 and 8) are a good start.

https://www.mineral-forum.com/message-board/viewtopic.php?p=19487#19487
Back to top
Reply to topic Reply with quote
Like
   
Display posts from previous:   
   Index -> FOR BEGINNERS: 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 © Forum FMF 2006-2021


Powered by FMF