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Favourite Rhodochrosites?
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Tobi




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PostPosted: Jan 08, 2017 11:45    Post subject: Re: Favourite Rhodochrosites?  

Volkmar Stingl wrote:
The most impressive rhodo I've ever seen by myself: the "Empress of China" at the Changsha Show in 2013. Largest crystal: 22 cm!
I have seen several pictures of this before, outstanding and surreal - and for sure some of the most prominent Rhodochrosite specimens that are not from the Sweet Home Mine.
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Graham Harrison




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PostPosted: Jan 08, 2017 13:53    Post subject: Re: Favourite Rhodochrosites?  

The hobby really only kicked for me when I managed to secure this specimen. It took a year of saving and a stern lecture from my father about buying a thing I was no doubt going to lose. As a 10 year old I was in awe of the specimen - today it resides in the drawer with the others but remains my absolute favorite. Thank you to all the hobbyists that have kept the interest, and a special thanks to the gentleman that kept it for me for a year so that I could save enough to eventually get it.
My Nchwaning 2 Rhodochrosite



rhodo1.jpg
 Mineral: Rhodochrosite
 Locality:
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
 Dimensions: 3cm x 3cm
 Description:
 Viewed:  7390 Time(s)

rhodo1.jpg


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Jamison Brizendine




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PostPosted: Jan 09, 2017 09:14    Post subject: Re: Favourite Rhodochrosites?  

Graham that is a very sweet rhodochrosite!

I have been manually digitizing some old Rock & Gem Magazine articles for my local mineral club. Bob Jones in (2007) wrote a brief article about rhodochrosite. The first two paragraphs really surprised me:

“At any mineral show these days, one of the species you’ll see on almost every mineral dealer’s table is rhodochrosite. Yet, when you read the about rhodochrosite in the mineralogy literature, you find comments that disagree with the current abundance of this manganese carbonate mineral.”

“James Dwight Dana’s System of Mineralogy, V. 11, 6th Edition (John Wiley & Sons, 1920) says of the mineral, ‘Distinct crystals not common’ (p. 278)! Henry A. Miers’ text Mineralogy (Macmillan & Co., 1929) says it ‘is not often found well crystallized’ (p. 460). Obviously, something has happened in the last half century to change things considerably.”

“A century ago, rhodochrosite really was an uncommon mineral; it was found only in a few European deposits, mainly mines in the Harz Mountains, and then only as relatively insignificant crystals. That situation changed when America’s Western mineral deposits really began to produce.” (Jones, 2007, p. 20)

I had always assumed that rhodochrosite was a fairly common mineral, considering I see a fair number of specimens at shows, usually lapidary grade or damaged specimens.

References Cited:

Jones, B., 2007, Royal Rhodochrosite: This plentiful species is anything but common: Rock and Gem, v. 37 (7), p. 20-25.
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Tobi




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PostPosted: Apr 12, 2017 08:42    Post subject: Re: Favourite Rhodochrosites?  

Tobi wrote:
What are your favourite localities for RHODOCHROSITE? My favourites are:
[...]
- Bockenrod, Reichelsheim, Odenwald, Hesse, Germany (not many of you may know that locality in southern Hesse, but I simply love the botryoidal material from there, just look at the attached photos)
I presented three of the best rhodo specimens from my German favourite locality Bockenrod in my opening comment on page 1. But there are several other localities for good rhodochrosites in central Germany (Wolf Mine was already mentioned and should be the most famous for collectors outside of Germany). Here are some of the best specimens that I could photograph during my last museum visits.


IMG_4036.JPG
 Mineral: Rhodochrosite
 Locality:
Wolf Mine, Herdorf, Siegerland, Rhineland-Palatinate/Rheinland-Pfalz, Germany
 Dimensions: Specimen size ~ 15 cm
 Description:
Collection Mineralogical Musum Marburg (my photo)
 Viewed:  6990 Time(s)

IMG_4036.JPG



IMG_0445 - Kopie.JPG
 Mineral: Rhodochrosite
 Locality:
Heinricherz Mine, Eisenbach, Staffel, Limburg an der Lahn, Limburg-Weilburg, Gießen, Hesse/Hessen, Germany
 Dimensions: Specimen size ~ 12 cm
 Description:
Collection Mineralogical Musum Marburg (my photo)
 Viewed:  6991 Time(s)

IMG_0445 - Kopie.JPG



IMG_0511.JPG
 Mineral: Rhodochrosite
 Locality:
Hambach - Gückingen area, Diez, Rhein-Lahn-Kreis, Lahn Valley, Rhineland-Palatinate/Rheinland-Pfalz, Germany
 Dimensions: Specimen size ~ 15 cm
 Description:
Collection Museum Wiesbaden, once on display at the Mineralogical Musum Marburg (my photo)
 Viewed:  6998 Time(s)

IMG_0511.JPG



IMG_0508.JPG
 Mineral: Rhodochrosite
 Locality:
Rothenberg Mine, Oberneisen, Niederneisen, Rhineland-Palatinate/Rheinland-Pfalz, Germany
 Dimensions: Specimen size ~ 12 cm
 Description:
Collection Michael Ochel, once on display at the Mineralogical Musum Marburg (my photo)
 Viewed:  7050 Time(s)

IMG_0508.JPG



IMG_0510.JPG
 Mineral: Rhodochrosite
 Locality:
Reichenbach, Lautertal (Odenwald), Bergstraße District, Darmstadt, Hesse/Hessen, Germany
 Dimensions: Specimen size ~ 10 cm
 Description:
Collection University of Göttingen, once on display at the Mineralogical Musum Marburg (my photo)
 Viewed:  7006 Time(s)

IMG_0510.JPG


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Tobi




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PostPosted: Dec 02, 2018 13:25    Post subject: Re: Favourite Rhodochrosites?  

Ushkatyn/Kazakhstan may be not among the top rhodochrosite localities like Sweet Home Mine, N'Chwaning or Wolf Mine, nevertheless this specimen immediately became one of my personal favourites:


UshkRHOD.JPG
 Mineral: Rhodochrosite
 Locality:
Ushkatyn No. 1 deposit, Ushkatyn deposits, Zhayrem, Karaganda Region, Kazakhstan
 Dimensions: Specimen height 11 cm
 Description:
 Viewed:  4931 Time(s)

UshkRHOD.JPG


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David




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PostPosted: Apr 05, 2020 05:05    Post subject: Re: Favourite Rhodochrosites?  

I'm surprised nobody mentioned about the type locality for rhodochrosite.
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Tobi




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PostPosted: Apr 05, 2020 11:18    Post subject: Re: Favourite Rhodochrosites?  

David wrote:
I'm surprised nobody mentioned about the type locality for rhodo.
Maybe because rhodochrosite from Cavnic is rather pale and not that well-crystallized, compared to other classic rhodos like Sweet Home Mine, Wolf Mine or N'Chwaning. But they're nice too!
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Michael Shaw
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PostPosted: Apr 05, 2020 11:58    Post subject: Re: Favourite Rhodochrosites?  

David,

You are right. Rhodochrosite from the type locality deserves a place in this thread. As Tobi said, perhaps not as vivid in coloration or as big crystals as some localities have produced, but I still love that nice pastel pink color.



1190 Rhodochrosite - Cavnic, Maramures, Romania.jpg
 Mineral: Rhodochrosite
 Locality:
Cavnic mining area, Cavnic, Maramures, Romania
 Dimensions: 7.0 cm x 9.5 cm
 Description:
Rich pink bladed rosettes with a pearly luster covering quartz matrix. Minor galena and sphalerite on the underside.
 Viewed:  3329 Time(s)

1190 Rhodochrosite - Cavnic, Maramures, Romania.jpg



2000 Rhodochrosite - Cavnic, Maramures, Romania.jpg
 Mineral: Rhodochrosite
 Locality:
Cavnic mining area, Cavnic, Maramures, Romania
 Dimensions: 7.7 cm x 9.5 cm.
 Description:
Pink rhodocrosite replacing platy calcite crystals with small metallic black tetrahedrite crystals on a matrix of massive white calcite and tetrahedrite.
 Viewed:  3333 Time(s)

2000  Rhodochrosite - Cavnic, Maramures, Romania.jpg


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Tobi




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PostPosted: Apr 06, 2020 07:36    Post subject: Re: Favourite Rhodochrosites?  

Really nice, Michael, especially the first one.

I want to add another classic locality that wasn't mentioned before: Oppu mine, Nishimeya-mura, Nakatsugaru District, Aomori Prefecture, Japan.
I love the specimens that came out of that mine, sadly they're nearly impossible to get. Wonderful material, especially when associated with pyrite.
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Gerhard Brandstetter




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PostPosted: Apr 06, 2020 08:23    Post subject: Re: Favourite Rhodochrosites?  

Interesting discussion and good specimen too. But i still miss some famous localities. So i add some photos from my collection to show the diversity of this beautiful mineral.


Rhodochrosit Cerro de Pasco, Cerro Prov., Peru 34 mm IMG_0682 fc.jpg
 Mineral: Rhodochrosite
 Locality:
Pasto Bueno District, Pallasca Province, Ancash Department, Peru
 Dimensions: 34 mm
 Description:
 Viewed:  3248 Time(s)

Rhodochrosit Cerro de Pasco, Cerro Prov., Peru 34 mm IMG_0682 fc.jpg



Sphalerit Rhodochrosit Santa Rita Morococha Distr. Yauli Prov. Peru 72 mm IMG_0704 fc.jpg
 Mineral: Rhodochrosite with Sphalerite
 Locality:
Santa Rita Mine, Morococha District, Yauli Province, Junín Department, Peru
 Dimensions: 72 mm
 Description:
 Viewed:  3246 Time(s)

Sphalerit Rhodochrosit Santa Rita Morococha Distr. Yauli Prov. Peru 72 mm IMG_0704 fc.jpg



Rhodochrosit Minas Capillitas, Andalgalá Dep.,, Catamarca, Argentinen 12 cm IMG_1464 fc.jpg
 Mineral: Rhodochrosite
 Locality:
Capillitas Mine, Andalgalá Department, Catamarca, Argentina
 Dimensions: 12 cm
 Description:
 Viewed:  3245 Time(s)

Rhodochrosit Minas Capillitas, Andalgalá Dep.,, Catamarca, Argentinen 12 cm IMG_1464 fc.jpg



Rhodochrosit Trepca 41 mm IMG_3410.jpg
 Mineral: Rhodochrosite
 Locality:
Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District, Kosovo
 Dimensions: 42 mm
 Description:
 Viewed:  3245 Time(s)

Rhodochrosit Trepca 41 mm IMG_3410.jpg



Rhodochrosit Potosi Mine Santa Eulalia, Chihuahua, Mexico 75 mm IMG_8569.jpg
 Mineral: Rhodochrosite
 Locality:
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 75 mm
 Description:
 Viewed:  3245 Time(s)

Rhodochrosit Potosi Mine Santa Eulalia, Chihuahua, Mexico 75 mm IMG_8569.jpg



Rhodochrosit Mina Potosi, Santa Eulalia, Chihuahua, Mexico 25 mm IMG_8638.jpg
 Mineral: Rhodochrosite
 Locality:
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 25 mm
 Description:
 Viewed:  3246 Time(s)

Rhodochrosit Mina Potosi, Santa Eulalia, Chihuahua, Mexico 25 mm IMG_8638.jpg



Rhodochrosit Santa Eulalia, Chihuahua, Mexico 21 mm IMG_8637.jpg
 Mineral: Rhodochrosite
 Locality:
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico
 Dimensions: 21 mm
 Description:
 Viewed:  3242 Time(s)

Rhodochrosit Santa Eulalia, Chihuahua, Mexico 21 mm IMG_8637.jpg



Rhodochrosit Alabandin Nagyag Siebenbürgen, Rumänien 6 cm IMG_7086 fc.jpg
 Mineral: Rhodochrosite
 Locality:
Sacarîmb (Nagyág), Deva, Hunedoara, Romania
 Dimensions: 6 cm
 Description:
 Viewed:  3247 Time(s)

Rhodochrosit Alabandin Nagyag Siebenbürgen, Rumänien 6 cm IMG_7086 fc.jpg


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Tobi




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PostPosted: Apr 06, 2020 09:23    Post subject: Re: Favourite Rhodochrosites?  

Great contribution, Gerhard, thank you! Really nice specimens, and of course you are right, a lot of good localities are still missing here. Especially Pasto Bueno, a wonderful locality where some specimens nearly reached Sweet Home Mine aesthetics!
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lluis




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PostPosted: Apr 06, 2020 10:19    Post subject: Re: Favourite Rhodochrosites?  

Many thanks for images!

By the way, from who is the label of the Nagyag Rhodo?
It looks as one of the Lord Ferguson, but my knowledge of calligraphy in those times is pretty bad....

With best wishes

Lluís
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Gerhard Brandstetter




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PostPosted: Apr 06, 2020 10:34    Post subject: Re: Favourite Rhodochrosites?  

Sorry Lluis, but i do not know the original collection. A pity - but my knowledge of old handwritings is nearly zero.

One thing is very important:
Nagyag is together with Kapnik the Co-Typelocality!
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Volkmar Stingl




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PostPosted: Apr 06, 2020 12:26    Post subject: Re: Favourite Rhodochrosites?  

lluis wrote:
Many thanks for images!

By the way, from who is the label of the Nagyag Rhodo?
It looks as one of the Lord Ferguson, but my knowledge of calligraphy in those times is pretty bad....

With best wishes

Lluís


Did Lord Ferguson use German language? The label uses German: "Rhodochrosit", "Manganblende". I think it must have been a German speaking collector.
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Don Lum




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PostPosted: Apr 06, 2020 13:46    Post subject: Re: Favourite Rhodochrosites?  

Rhodochrosite


P8040377 (2).JPG
 Mineral: Rhodochrosite, Quartz, Pyrite
 Locality:
Oppu Mine, Nishimeya-mura, Naka-Tsugaru-gun, Aomori Prefecture, Tohoku Region, Honshu Island, Japan
 Dimensions: 11 cm x 9 cm x 6.7 cm
 Description:
 Viewed:  3150 Time(s)

P8040377 (2).JPG



_________________
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David




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PostPosted: Apr 06, 2020 15:32    Post subject: Re: Favourite Rhodochrosites?  

Fabulous piece! I don't recall having seen anything like this.
Japanese minerals have something special, so amazing!
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David




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PostPosted: Apr 06, 2020 15:35    Post subject: Re: Favourite Rhodochrosites?  

Michael Shaw wrote:
David,

You are right. Rhodochrosite from the type locality deserves a place in this thread. As Tobi said, perhaps not as vivid in coloration or as big crystals as some localities have produced, but I still love that nice pastel pink color.


Those are some amazing rhodos, great color!
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am mizunaka




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PostPosted: Apr 06, 2020 16:55    Post subject: Re: Favourite Rhodochrosites?  

Lesser known US locality for rhodochrosite.


RhodoAlbite.jpg
 Mineral: Rhodochrosite
 Locality:
Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland County, North Carolina, USA
 Dimensions: 2.0 x 2.8 cm
 Description:
 Viewed:  3077 Time(s)

RhodoAlbite.jpg



RhodoTrio.jpg
 Mineral: Rhodochrosite, Albite
 Locality:
Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland County, North Carolina, USA
 Dimensions: 5.0 x 3.8 cm
 Description:
 Viewed:  3077 Time(s)

RhodoTrio.jpg



FooteRhodoApatite.jpg
 Mineral: Rhodochrosite, Fluorapatite, Albite
 Locality:
Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland County, North Carolina, USA
 Dimensions: 7.6 x 5.1 cm
 Description:
 Viewed:  3079 Time(s)

FooteRhodoApatite.jpg


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Tobi




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PostPosted: Apr 07, 2020 01:16    Post subject: Re: Favourite Rhodochrosites?  

Thank you all for your contributions - wonderful specimens!
Mike, I like that uncommon crystal on your first Foote Lithium Mine specimen (RhodoAlbite.jpg), is that a kind of twin?
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am mizunaka




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PostPosted: Apr 07, 2020 12:08    Post subject: Re: Favourite Rhodochrosites?  

Tobi wrote:
Thank you all for your contributions - wonderful specimens!
Mike, I like that uncommon crystal on your first Foote Lithium Mine specimen (RhodoAlbite.jpg), is that a kind of twin?


I don't believe that the rhodochrosite is twinned. I have read that it is a pseudo-octahedral habit found only at the Foote Mine. The rhodochrosite in the bottom photo exhibits a similar habit.
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