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23 May-16:50:42 The mizunaka collection - quartz (Am Mizunaka)
23 May-10:35:25 Re: don lum collection (Don Lum)
23 May-10:29:14 Re: more label translation (Peter Lemkin)
23 May-08:35:32 Re: collection of michael shaw (Michael Shaw)
23 May-03:49:25 Re: more label translation (Tobi)
23 May-03:17:33 Re: don lum collection (Carles Millan)
22 May-23:22:42 Re: don lum collection (Don Lum)
22 May-18:50:58 Boldut mine - silvia's collection (Silvia)
22 May-13:15:43 Re: more label translation (John S. White)
22 May-13:13:02 More label translation (Jesse Fisher)
22 May-03:40:56 The mizunaka collection - fluorite (Am Mizunaka)
22 May-02:09:44 Re: the mim museum in beirut, lebanon (Mim Museum)
21 May-20:19:13 Re: the mim museum in beirut, lebanon (Silvia)
21 May-19:11:50 Re: presentation of new members - joão luz from lisboa, portugal (João Luz)
21 May-19:07:30 Re: is this a ruby? (João Luz)
21 May-07:25:51 Re: need help identifying this rock (Roger Warin)
20 May-23:37:19 Re: collection of volkmar stingl (Volkmar Stingl)
20 May-18:30:28 Re: need help identifying this rock (Rukittnritemeow)
20 May-09:55:28 Re: collection of firmo espinar (Firmo Espinar)
19 May-18:32:23 Re: need help identifying this rock (Bob Morgan)
19 May-14:30:20 Re: need help identifying this rock (John S. White)
19 May-14:00:26 Re: calcite in malkhan elbaite (Roger Warin)
19 May-12:55:48 Re: need help identifying this rock (Bob Morgan)
19 May-12:23:13 Re: calcite in malkhan elbaite (Josele)
19 May-09:59:30 Re: calcite in malkhan elbaite (Jesse Fisher)

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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.
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  Topic: Location in Romania
Linus

Replies: 5
Views: 2115

PostForum: What is it? - Where is it from?   Posted: Sep 30, 2021 17:31   Subject: Re: Location in Romania
just ran across this:
Boița is a commune in Sibiu County, Transylvania, Romania, at the foothills of the Cindrel Mountains, 22 km south of the county capital Sibiu
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 24, 2021 14:52   Subject: Re: Black, metallic, yellow oxide?
Yes indeed. I'm trying to get some documentation on its possible whereabouts, but we'll have to see how that goes.
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 23, 2021 17:36   Subject: Re: Black, metallic, yellow oxide?
I'm debating on the Connecticut provenance though, could also be Rwanda, Uganda... I'm hoping I may be able to tie that down too. You guys have been very helpful. I'm about 95% convinced on the specie ...
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 23, 2021 17:34   Subject: Re: Black, metallic, yellow oxide?
with precious little info, I think you did great, than you!
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 22, 2021 16:58   Subject: Re: Black, metallic, yellow oxide?
... one of Rob's pieces... (oh and the yellow may be tungstite or similar...

"Ferberite Pseudomorph after Scheelite
Ferberite Pseudomorph after Scheelite from Trumbull, Fairfield Co., Connect ...
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 22, 2021 15:30   Subject: Re: Black, metallic, yellow oxide?
ferberrite ps scheelite???
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 22, 2021 15:20   Subject: Re: Black, metallic, yellow oxide?
well, we are closing in on it. XRF (Niton XL5) shows strong tungsten and iron... see the pic.
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 20:37   Subject: Re: Black, metallic, yellow oxide?
Hi Bob, I think youre right about the orthorhombic, but the streak and pronounced cleavages suggest other than brookite... I think we're closing in on it!
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 19:24   Subject: Re: Black, metallic, yellow oxide?
oh, and the whitish spots in the picture look to me slightly aplitic, they fluoresce a weak tan-yellow.
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 19:21   Subject: Re: Black, metallic, yellow oxide?
Sort of cubic, but there is a flattening at the pyramid base that is offset versus the opposite side, so maybe not cubic? (I haven't had mineralogy in about 40 yrs). It is noticeably heavy. I may be a ...
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 17:31   Subject: Re: Black, metallic, yellow oxide?
Hardness is between 4 and 5 (done with hardness points) and it seems to have at least three pronounced cleavage planes... so probably not franklinite. It is not fluorescent.
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 16:12   Subject: Re: Black, metallic, yellow oxide?
Matt, I think Franklinite is an excellent guess... I'll play with a bit more.
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 16:01   Subject: Re: Black, metallic, yellow oxide?
I stated it was non magnetic, very strong cleavage too, as shown, almost looks like carbonate type cleavage...
  Topic: Black, metallic, yellow oxide?
Linus

Replies: 24
Views: 6198

PostForum: What is it? - Where is it from?   Posted: Jul 21, 2021 14:51   Subject: Black, metallic, yellow oxide?
Hi All! This is one I probably should know, but its not registering.
pyramidal, Black, sparkly metallic on broken surfaces, strong cleavage, non-magnetic, larger broken surfaces that cut across the c ...
  Topic: Fluorite Santa Eulalia
Linus

Replies: 3
Views: 1820

PostForum: What is it? - Where is it from?   Posted: Apr 10, 2021 18:15   Subject: Re: Fluorite Santa Eulalia
Hi Peter, so did all those pieces come from Mina Carmen?
  Topic: Fluorite Santa Eulalia
Linus

Replies: 3
Views: 1820

PostForum: What is it? - Where is it from?   Posted: Apr 10, 2021 15:00   Subject: Fluorite Santa Eulalia
I recently came across a couple old pieces from this great locality. This one is clearly "Fluorite ps Calcite" but I am not sure whether it is from "West Camp" or from "Mina E ...
  Topic: Unusual bar pyrite from Nanisivik
Linus

Replies: 21
Views: 7479

PostForum: Minerals and Mineralogy   Posted: Oct 29, 2020 16:48   Subject: Re: Unusual bar pyrite from Nanisivik
i.e. bottom: Mar 23, 2013 by Pete Richards
  Topic: Unusual bar pyrite from Nanisivik
Linus

Replies: 21
Views: 7479

PostForum: Minerals and Mineralogy   Posted: Oct 29, 2020 16:46   Subject: Re: Unusual bar pyrite from Nanisivik
Actually there are some interesting thoughts on this at:
https://www.mineral-forum.com/message-board/viewtopic.php?t=2980 of this forum. Look down towards the bottom.
  Topic: Unusual bar pyrite from Nanisivik
Linus

Replies: 21
Views: 7479

PostForum: Minerals and Mineralogy   Posted: Oct 29, 2020 15:05   Subject: Re: Unusual bar pyrite from Nanisivik
I recall that the Buick Mine in Missouri was very famous for rectangular pyrites, some up to 12 inchs long! The "Virtual Museum of Geology" website mentions that many of these had holes down ...
  Topic: Blue Lace Agate from Ysterputs, Southern Namibia - (31)
Linus

Replies: 4
Views: 6661

PostForum: Featured Columns of FMF   Posted: May 28, 2020 14:29   Subject: Re: Blue Lace Agate from Ysterputs, Southern Namibia - (31)
Thanks vey much for this article! Ive always been a fan of the Blue Lace and I mourn the idling of the Mine.
 
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