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Gerhard Brandstetter
Joined: 01 Apr 2013
Posts: 96
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Posted: Dec 06, 2017 16:16 Post subject: Re: Favourite Fluorites? |
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Something from Greece
Locality: | Koutalas, Serifos Island, Cyclade Islands, Kykládes Prefecture, Aegean Islands Department (Aiyaíon), Greece | |
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Dimensions: | 12 cm |
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Mineral: | Fluorite |
Locality: | Lavrion Mining District, Attikí (Attica) Prefecture, Greece | |
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Dimensions: | 5,7 cm |
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Mineral: | Fluorite |
Locality: | Plaka Mines, Plaka, Lavrion Mining District, Attikí (Attica) Prefecture, Greece | |
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Dimensions: | 11 cm |
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28553 Time(s) |
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Jamison Brizendine
Joined: 27 Feb 2014
Posts: 128
Location: Northeast Ohio
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Posted: Dec 07, 2017 08:42 Post subject: Re: Favourite Fluorites? |
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It’s impossible for me to state which localities are my favorites for fluorites. Like Michael Shaw, one of my favorite localities is the Illinois-Kentucky Fluorspar District.
This specimen is in the collection of the Cranbook Institute of Science and formerly in Archibald N. Goddard’s collection. Archibald Goddard was a Cranbrook Trustee from the 1930s to the 1960s (Appleman, Bielat and James, 2000, p. 29, 45).
The specimen itself is in excellent quality and most likely from the Sub-Rosiclare Level, W.L. Davis-Deardorff Mine. The specimen was probably mined during the late 1930s up to the 1950s. The light purple fluorite cubes, the scattered sphalerite crystals and the heavy amount of quartz all seem to indicate that this specimen originated from the Deardoff. The Deardorff Mine was one of Ozark-Mahoning’s richest deposit when Ozark and Mahoning Mining Companies completed their merger.
References Cited:
Appleman, P., Bielat, V. and James, A., 2000, Papers, 1920s-1990s: Cranbrook Institute of Science director’s papers, archives, acquisition number 1990-31: p. 29, 45.
Mineral: | Fluorite, Sphalerite and Quartz |
Locality: | Cave-in-Rock Sub-District, Hardin County, Illinois, USA | |
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Dimensions: | 22 cm x 18 cm x 12.5 cm |
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Cabinet-sized specimen of fluorite, sphalerite and quartz from the Cave-in-Rock District, Hardin County, Illinois, USA.
The label is probably about 6 cm |
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28526 Time(s) |
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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Posted: Dec 12, 2017 08:41 Post subject: Re: Favourite Fluorites? |
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This is a Dalnegorsk, Russia fluorite of fine quality. It measure 5.5 x 4 x 3 cm and is a very pale green with a faint phantom. There is a slight contact on the lower left. R Watzl Photo
Locality: | Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia | |
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Dimensions: | 5.5 x 4 x 3 cm |
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28392 Time(s) |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Dec 12, 2017 12:16 Post subject: Re: Favourite Fluorites? |
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Spinel twinned fluorite crystal with topaz and smoky quartz. An unusual location for fluorite, better known for aquamarine.
Mineral: | Fluorite, Topaz, Smoky Quartz |
Locality: | Sherlova Gora, Adun-Cholon Range, Nerchinsk, Zabaykalsky Krai, Russia | |
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Dimensions: | 6x6x4 cm overall size |
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28351 Time(s) |
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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Posted: Dec 18, 2017 14:54 Post subject: Re: Favourite Fluorites? |
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A light blue miniature fluorite from Walworth, NY on dolomite. Measures 3.2 x 3.2 x 4 cm
Locality: | Walworth Quarry, Walworth, Wayne County, New York, USA | |
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Dimensions: | 3.2 x 3.2 x 4 cm |
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28180 Time(s) |
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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Posted: Jan 08, 2018 10:58 Post subject: Re: Favourite Fluorites? |
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This cluster of fluorite on quartz is from Berbes, Spain. The intergrown crystals (3.5 cm on edge) have sharp edges with marvelous phantoms that are red-violet in color.
Locality: | La Cabaña, Berbes mining area, Valdelmar, Berbes, Ribadesella, Comarca Oriente, Principality of Asturias (Asturias), Spain | |
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Gerhard Brandstetter
Joined: 01 Apr 2013
Posts: 96
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Posted: Jan 08, 2018 15:13 Post subject: Re: Favourite Fluorites? |
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I hope you forgive me for showing you a Fluorite without any crystals.
Of course this special rarity is among my favourites!
Fluorite ps. fossil wood (Dadoxylon sp.), Permian age
Gneisenau street, Hilbersdorf, Chemnitz, Saxony, Germany
Found some years ago during construction works. Huge logs up to many meters were recovered, but Fluorite was always rare.
Now the whole town with its petrified forest is a protected geological area and collecting is strictly forbidden.
Mineral: | Fluorite |
Locality: | Gneisenau street, Hilbersdorf, Chemnitz, Saxony/Sachsen, Germany | |
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Dimensions: | 64 mm |
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27949 Time(s) |
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Gerhard Brandstetter
Joined: 01 Apr 2013
Posts: 96
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Posted: Jan 08, 2018 17:30 Post subject: Re: Favourite Fluorites? |
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Hilbersdorf is a part of Chemnitz, Gneisenau street is a "normal" street inside the town.
https://www.google.at/maps/place/Gneisenaustra%C3%9Fe,+09131+Chemnitz,+Alemania/@50.8520235,12.940834,588m/data=
(link normalized by FMF)
The petrified forest of Chemnitz is well documented - sediments of Permian age with huge logs and a rich fauna and flora. Fluorite replacing fossil wood has always been rare and is a German classic. The museum in the "Tietz" has a fantastic exhibition about the petrified forest inside Chemnitz.
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Peter Lemkin
Joined: 18 Nov 2016
Posts: 398
Location: Prague
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Posted: Jan 09, 2018 02:41 Post subject: Re: Favourite Fluorites? |
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That is a great log partly after fluorite! Personally, I love and collect such oddities and pseudomorphs, etc. As far are being found just under a city street, the type-location for danburite is in Danbury, Connecticut, USA and is now under a large city parking lot - accessible to no one. [and there is a high suspicion that more xx of danburite are still under those parked cars]. I discovered this when I was a student at Yale and drove to Danbury following directions from an old minerals of Connecticut guide book. Confused, standing in a parking lot I asked someone where the famous danburite location was and they told me I was standing over it. There are several other such examples I am aware of - and they always sadden me. Most of the World doesn't understand the importance of minerals and mineralogy - to them they are 'just rocks'.
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Jan 09, 2018 12:06 Post subject: Re: Favourite Fluorites? |
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Far too many classic mineral localities are no longer accessible, or even existent. The Heights Mine is a good example. During the mid to late 19th century an underground Heights Mine was established to recover iron ore from a series of mineralized veins and associated metasomatic flats near the village of Eastgate, in Weardale. During the 1960s and 70s these old mine workings became popular with local collectors, and many specimens of fluorite (usually bright green, but occasionally other colors as well) were recovered. In the late 1970s a crushed stone quarry was established on the site, and over the years has slowly removed the mineralization and obliterated the mine workings. Through the end of the 20th century new material would occasionally find it's way out, but in recent years much, if not all the old workings and associated mineral deposits have been removed by quarrying, rendering this an essentially extinct locality.
Specimens known to have come from the old underground workings can be labeled "Heights Mine," while newer ones recovered during the quarrying operation are labeled "Heights Quarry." Without information specifying when/where specimens were recovered, it is impossible to tell the difference, and most recent specimens are labeled as coming from the quarry. The specimen in the photo came out of a collection that was assembled in the 1970s, so likely dates to that time.
Mineral: | Fluorite with Calcite |
Locality: | Heights Quarry, Westgate, Weardale, North Pennines Orefield, County Durham, England / United Kingdom | |
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Dimensions: | 8x6x6 cm overall size |
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27834 Time(s) |
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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Posted: Jan 11, 2018 09:54 Post subject: Re: Favourite Fluorites? |
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Superb Fluorite Jesse!!
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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Posted: Jan 18, 2018 14:22 Post subject: Re: Favourite Fluorites? |
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Here is a grouping of light green, multi-stepped fluorites with purple phantoms from Shangbao (one of my favorite locales). The matrix is quartz with some nice accenting calcite.
Locality: | Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province, China | |
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Dimensions: | 11 x 6 x 5 cm |
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27460 Time(s) |
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colin robinson
Joined: 29 May 2013
Posts: 82
Location: Cumbria
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Posted: Jan 18, 2018 18:56 Post subject: Re: Favourite Fluorites? |
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Jesse, Heights quarry has been working for over 100 years. Probably not continuously but it has still existed as a stone quarry. Also worth noting is that most of the flats associated with the south vein are still there, albeit now covered by landscaping. As the quarry face advanced towards the south side of the flats it stopped as the limestone was contaminated by iron and silica. They then cut through the south vein near to its junction with west cross vein and continued working north and east leaving most of the mineralization intact. Something like 300,000 tonnes of west cross vein material was removed to make sea defenses near Sunderland. That is the great shame about the recent history of Heights as only a miniscule proportion of the fluorite specimens possible were recovered.
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Jan 19, 2018 13:56 Post subject: Re: Favourite Fluorites? |
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Wonderful specimens, Jesse and Vincent!
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Feb 14, 2018 13:46 Post subject: Re: Favourite Fluorites? |
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New from Tucson, not the most colorful fluorite around, but I thought the crystallographicly oriented second generation of cube-octahedrons on the points of first generation octahedrons very interesting. I originally referred to this as "epitaxial" orientation, but was told by a mineralogist friend that epitaxy refers to the oriented overgrowth of two different minerals. We couldn't, however, think of the proper term for a fluorite-on-fluorite arrangement such as this.
Mineral: | Fluorite, Quartz, Galena |
Locality: | Nikolaevski Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Far-Eastern Region, Russia | |
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Dimensions: | 10x7x4 cm overall size |
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26847 Time(s) |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Feb 21, 2018 13:06 Post subject: Re: Favourite Fluorites? |
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Another new fluorite from the recent Tucson show. The exact location is given as "Jebel Tighemi, Taourirt, Morocco." Jebel Tighemi is not a listed location on Mindat, so perhaps this is a new find?
Mineral: | Fluorite with Barite |
Locality: | Jebel Tirhemi, Taourirt, Taourirt Province, Oriental Region, Morocco | |
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Dimensions: | 7x6x4 cm overall size |
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26617 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4900
Location: Barcelona
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Posted: Feb 22, 2018 13:59 Post subject: Re: Favourite Fluorites? |
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Jesse Fisher wrote: | Another new fluorite from the recent Tucson show. The exact location is given as "Jebel Tighemi, Taourirt, Morocco." Jebel Tighemi is not a listed location on Mindat, so perhaps this is a new find? |
I never heard before about a mountain (Jebel) named Tighemi close or around Taourirt. Or it is a very accurate locality or is something wrong.
Other people could know it better than me, I'm not very familiar with the Taourirt province.
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VRigatti
Joined: 19 Dec 2009
Posts: 81
Location: Denver, CO
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Posted: Feb 25, 2018 18:20 Post subject: Re: Favourite Fluorites? |
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This green fluorite from Piaotang mine in China was a new find in 2017. It is fairly large with sharp phantoms, and with faces that are 9 cm across. Internally are white barite crystals that grew on the stepped face of an earlier generation of fluorite, showing an unusual appearance. At least that is how it appears to me. Any other thoughts on how these inclusions may have formed? Sorry for the picture quality...
Mineral: | Fluorite |
Locality: | Piaotang Mine, Dayu, Ganzhou Prefecture, Jiangxi Province, China | |
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26340 Time(s) |
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Bob Harman
Joined: 06 Nov 2015
Posts: 765
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Posted: Feb 25, 2018 22:00 Post subject: Re: Favourite Fluorites? |
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About 2005 quarry workers blasted thru a large void in the White Rock Quarry aka Edward Kraemer & Sons Quarry in Clay Center Ohio. [Sometimes this quarry is erroneously called Clay Center Quarry, but this is only the nearby Ohio town and not the correct quarry name.]
Anyway many many high quality specimens of root beer colored fluorites with celestine were mined. A number of us knew the contract specimen miners so we were able to acquire a number of varied specimens. This is one example from that find. Numerous smaller fluorites admixed with white bladed celestine. BOB
Mineral: | Fluorite and Celestine |
Locality: | White Rock Quarry, Clay Center, Ottawa County, Ohio, USA | |
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Dimensions: | Specimen is about 17 cm; the fluorites are up to 1.1 cm |
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Fluorite and celestine on matrix |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4900
Location: Barcelona
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Posted: Feb 28, 2018 11:38 Post subject: Re: Favourite Fluorites? |
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Jesse Fisher wrote: | Another new fluorite from the recent Tucson show. The exact location is given as "Jebel Tighemi, Taourirt, Morocco." Jebel Tighemi is not a listed location on Mindat, so perhaps this is a new find? |
Solved by the kind addition of Christian Mondeilh, great expert of Moroccan deposits. Thanks Christian! :
The Jebel Tighémi mine is located 10 km W-NW of Taourirt in the province of Taourirt Oriental Region.
Brief history of the mine formerly known as Jebel Tirremi:
Discovered in 1948 and operated by a small French company A.Dubois until 1960, the fluorite was exported to Nemour in Algeria.
It was forgotten for a long time, some geologists and "scrapers" have occasionally worked on this site for fluorite crystals, Between 2004 and 2005 it was exploited by people who released a few hundred beautiful specimens.
Since 2015 an Indian company Gujarat Fluorochemicals Limited has taken over a concession with an industrial exploitation. The first releases of crystallized Fluorites appeared on the Moroccan market in July 2017, although previously low quality specimens were more or less frequent in all kind of Shows. In Munich 2017 there was a nice lot of them at a price apparently too high, as often happens during the first commercialization.
Christian Mondeilh
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