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Posted: Feb 22, 2021 04:48 Post subject: Re: Popular Minerals - Cassiterite from Amo, Yunnan, China
Jordi Fabre wrote:
Twinned Cassiterite crystals on matrix and with Quartz. Among the best pieces found in this locality (Amo deposit, Ximeng, Pu'er Prefecture, Yunnan Province, China)
Outstanding quality, really a great and unique specimen!
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
Posted: Feb 23, 2021 14:05 Post subject: Popular Minerals - Dissakisite-(Ce)/Allanite-(Ce) on Dolomite from Trimouns Mine, France
Crystal on matrix of Dolomite of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce)
The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce)
Dissakisite-(Ce)-Allanite-(Ce) with Dolomite - Trimouns Mine_Occitanie_France.jpg
Mineral:
Dissakisite-(Ce)/Allanite-(Ce) with Dolomite
Locality:
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie, France
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
Posted: Feb 25, 2021 18:00 Post subject: Popular Minerals - Octahedral Fluorite from Shangbao Mine, China
Large crystal with an apparently octahedral habit, formed by polycrystalline growths with dominant dodecahedral forms.
On matrix, with Quartz crystals and white Dolomite rhombohedra.
Fluorite octahedral with Quartz and Dolomite - Shangbao Mine_Hunan Province_China.jpg
Mineral:
Octahedral Fluorite with Dolomite and Quartz
Locality:
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province, China
Dimensions:
Specimen size: 11.3 × 9.5 × 9.2 cm / main crystal size: 10 × 9.5 cm
Posted: Mar 04, 2021 02:54 Post subject: Re: Popular Minerals - Octahedral Fluorite from Shangbao Mine, China
Jordi Fabre wrote:
Octahedral Fluorite with Dolomite and Quartz
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province, China
Specimen size: 11.3 × 9.5 × 9.2 cm / main crystal size: 10 × 9.5 cm.
I really like Shangbao fluorites, and that one is among the most impressive I have seen, the size of that crystal is amazing. Absolutely stunning - the perfect fluorite specimen!
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
Posted: Mar 06, 2021 16:26 Post subject: Popular Minerals - Creedite from Navidad Mine, Mexico
Druse on matrix of bipyramidal Creedite crystals, some of them doubly terminated, with sharp pointed terminations.
The specimen is quite different from those known from this locality in recent years, although in some old collections there are similar specimens from the same source, which coincides with the indications that this find was made in old galleries of the mine.
Creedite - Navidad Mine_Durango_Mexico.jpg
Mineral:
Creedite
Locality:
Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango, Mexico
Description:
Specimen size: 8.6 × 6.2 × 5.5 cm / main crystal size: 0.6 × 0.3 cm
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
Posted: Mar 14, 2021 14:34 Post subject: Popular Minerals - Quartz (variety rose Quartz) from Sapucaia do Norte, Brazil
Group of Quartz crystals (variety rose quartz)
What stands out most in the piece is how sharp the crystals are since rose quartz very rarely presents so much definition.
A Brazilian classic from the Rock Currier collection (No. 5105)
Specimen size: 11.1 ×5.9 × 3.9 cm
Main crystal size: 3.4 × 1.1 cm
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