How would you explain the attached picture? The CuSO4 reacted just with the carbonate hydromagnesite and not with the hydroxyde brucite and the matrix?Still, if I had to bet for a beer I would choose artificial.

Happened to me already several times (astonishingly always outside of Austria) that I was heartly welcomed by completely strangers to me as they knew me from mindat. I always was completely surprised but indeed we are a small community.

Typical Herja, I was in that mine several Times.

Compare with https://www.mindat.org/photo-328231.html and thats all wulfenite.

And I must add: thats a mass Produkt https://www.ma-shops.de/klein/item.php?id=15860

You just have to read: 5 Centesimo 1862

Artinite is much thinner than the xtls shown above. My guess would be aragonite.

As I have no info about that locality (and seeing also rosasite is mentioned) I feel a bit uncomfortable to add malachit as new mineral there. Any references?

The bright green in the child pictures should be the duftite. The first one is misleading and should be exchanged. By the way: malachite doesnt show up in the mineral list of that locality.

This jamesonite is analysed:https://www.mindat.org/photo-31746.htmland this (my) boulangerite:https://www.mindat.org/photo-1312490.htmlVisual distinguising is not possible.

Or you choose another paratellurite out of 19 pictures from there and ask the uploader.

Nicu`s last visit on mindat was in 2019, so chances are very low that he will see a PM on mindat.

Yours give me a 404 error - not found!

Here you can see a specimen of arsenic and on the child picture you see the arsenolite growing on it: https://www.mindat.org/photo-1182492.html

Got several requests till now and sent all of them.On few occasions I asked for some and got it too.

I also thought on some annotations already. The problem is you often have a just small dot of ore. When you add the text Tnt-Fe for example you dont see that small dot anymore! Thats sometimes really a mess by printed media. I`ll try the existing annotations the next time I have a thin ...

No big deal, changed the photos and will do so in future.In my opinion its more important to write in the description what you see!

Dont forget Civ4. Its most important to have enough mines (iron, silver, gold, copper) in the game.  

You can use that picture. Its ok for Hans!

I am not at home right now but will try to contact Hans.

Here is the literature you mention:https://www.zobodat.at/pdf/CAR_204_124_0065-0146.pdfI read from three localities:- Laggerhof https://www.mindat.org/loc-42281.html- Hochgosch https://www.mindat.org/loc-46684.html- a small quarry SE of the well known Wolfsberg ...

He will try to contact you, he is in Russia right now.

Bump after 6 years!https://www.mindat.org/photo-977089.htmlI spoke with Mr.Gesselbauer yesterday. He was the finder of the rare Cu-secundaries so he should know where he found them! He confirmed me that it was this quarry: https://www.mindat.org/loc-407370.html Dont ask me who is the owner ...

Contacted him!

If anyone wants to watch - its every 22nd of November - when the sun is shining.

Well, in reality it was even more spectacular. Like a beam from Startrek :-)

Would be a good candidate for a thin section.Just joking :-)

Jason, thats exactly the reason for going out collecting - at least in my opinion!

Definitely no. No competition here. Thats also the reason I dont want to see any of my pics as POTD.

Horst is on vacation right now!

Neednt be a metal!I get signals quite frequently from graphite, coking coal and sometimes even some schist.

A small side note. This is the other locality you mention https://www.mindat.org/loc-58140.html . I found calederonite in 1992 but was not able to ID it further on. A first publication was made in 1996 as an unkown Pb-Fe-vanadate  Taucher J. & Hollerer Ch. E. (1996): Vanadinit und ...

Highly appreciated Joachim! Thanks.

Hello,Can someone supply me with the following literature? I would need it to compare with another locality. Thanks in advance! Remy, P., Gatel, P., Meisser, N. (2014): Indice à terres rares de Mosset (Pyrénées-Orientales). Le Cahier des Micromonteurs, 1-2014, 3-17.  

Thanks Jason,its a pitty I just was there and could have taken a small probe for EDS.So we`ll have to wait till next July (or my job brings me back there sooner - have a small side project there with thin sections of so called "Glaserz").Edit: not all labels there are correct; this one for ...

For some people in science its important to put others in categories. My boss always explains me how linked professionals and amateurs are in astronomy. In archeology its completely the opposite. If you didnt study you arent allowed to do anything. Mineralogy is between both in my opinion.By the ...

Hello Chrissy, welcome to mindat!I never was at Denver - I guess the costs from Europe are a bit more than yours.I still could advice you to go - not for the costly minerals but for the people you will get to know!

I also would say typical twinning of cerussite.

Dont want to start a new thread.This one is also wrong https://www.mindat.org/photo-1316972.html

Palygorskite was very common at Max especially short before the closure of the mine. Its associated with calcite and sphalerite. Have several of them.

The schulenbergite are the darker blue, more rounded xtls and the serpierite the elongated, almost white xtls.

Romanian dolomite xtls wrapped with wet toilet paper produced "rhodochrosites".

Thinking on Occam's razor I would also say limonite.

Two years later ...

Small side note Günter, forget about the counts!Its an unique picture and thats it.

Here we are:https://manualzz.com/doc/4447246/betriebsanleitung-mp5

A surprising twist in this case! I made a SEM-EDS of this mineral and its pure clausthalite! 

Thank you Helmut!From a FB group I got a similiar response. Ok now its narrowed down to  Clausthal, Trogtal, Lerbach, Zorge und Tilkerode. It seems that the most stuff came from Zorge. Is this true?

Yes the second line is selenmercur which is tiemannite.

And a picture from the other side