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Borca Valley, Neamț County, Romaniai
Regional Level Types
Borca Valley- not defined -
Neamț CountyCounty
RomaniaCountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
47° 10' 47'' North , 25° 46' 44'' East
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Borca6,556 (2012)1.0km
Soci830 (2013)1.4km
Pârâul Cârjei681 (2015)2.4km
Pârâul Pântei539 (2015)3.2km
Mădei878 (2013)3.4km
Mindat Locality ID:
307528
Long-form identifier:
1:2:307528:2
GUID (UUID V4):
2a2473e3-1151-4838-a047-d0a78cea8b0e


Munteanu et al. lists a Mn deposit in this area/site.

One of many stratabound Mn deposits within the East Carpathian Mn-rich belt: a Cambrian/Ordovician (with greenshist facies metamorphism in Silurian) island arc complex. Other deposits include: Arșița (in Iacobeni), Argestrut, Broșteni (a nearby locality), Cosna, Dadu, Dealul Rusului, Drancani, Oița, Roșu, and Sărișor.

In terms of structural geology, these deposits belong to the Central East Carpathian basement nappes. At least some of them, i.e., the ones of the Iacobeni area (Arșița, Tolovanu, Argestrut, Dadu, Oița) are within the Putna Nappe (part of Sub-Bucovinian Nappe). In terms of lithostratigraphy, they belong to Tulgheș Group, that is, Lower Palaeozoic metasedimentary/volcanosedimentary sequence. In a more detailed description they are listed under Harghita Fm. (Tg2), a variegated sequence with Mn-rich metacherts / black quartzites.

Most likely similar to other Romanian Mn deposits, like Răzoare (in Maramureș), Delineşti (in Semenic Mts.), or Sălciua de Sus (Gilău Mts.).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Bustamite
Formula: CaMn2+(Si2O6)
Reference: Paulina Hirtopanu, W. Peter Scott, Nicolae Calin (2018) New data on johannsenite and its mineral associations in Bistrita Mts, Romania. in abstracts of the 22nd IMA Meeting Melbourne p 461
Ferrorhodonite
Formula: CaMn3Fe[Si5O15]
Reference: Paulina Hirtopanu, W. Peter Scott, Nicolae Calin (2018) New data on johannsenite and its mineral associations in Bistrita Mts, Romania. in abstracts of the 22nd IMA Meeting Melbourne p 461
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Paulina Hirtopanu, W. Peter Scott, Nicolae Calin (2018) New data on johannsenite and its mineral associations in Bistrita Mts, Romania. in abstracts of the 22nd IMA Meeting Melbourne p 461
Johannsenite
Formula: CaMn2+Si2O6
Reference: Paulina Hirtopanu, W. Peter Scott, Nicolae Calin (2018) New data on johannsenite and its mineral associations in Bistrita Mts, Romania. in abstracts of the 22nd IMA Meeting Melbourne p 461

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Bustamite9.DG.05CaMn2+(Si2O6)
Ferrorhodonite9.DK.CaMn3Fe[Si5O15]
Grossular9.AD.25Ca3Al2(SiO4)3
Johannsenite9.DA.15CaMn2+Si2O6

List of minerals for each chemical element

OOxygen
O BustamiteCaMn2+(Si2O6)
O FerrorhodoniteCaMn3Fe[Si5O15]
O GrossularCa3Al2(SiO4)3
O JohannseniteCaMn2+Si2O6
AlAluminium
Al GrossularCa3Al2(SiO4)3
SiSilicon
Si BustamiteCaMn2+(Si2O6)
Si FerrorhodoniteCaMn3Fe[Si5O15]
Si GrossularCa3Al2(SiO4)3
Si JohannseniteCaMn2+Si2O6
CaCalcium
Ca BustamiteCaMn2+(Si2O6)
Ca FerrorhodoniteCaMn3Fe[Si5O15]
Ca GrossularCa3Al2(SiO4)3
Ca JohannseniteCaMn2+Si2O6
MnManganese
Mn BustamiteCaMn2+(Si2O6)
Mn FerrorhodoniteCaMn3Fe[Si5O15]
Mn JohannseniteCaMn2+Si2O6
FeIron
Fe FerrorhodoniteCaMn3Fe[Si5O15]

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hârtopanu, P., Scott, P.W., Calin, N. (2018): New data on johannsenite and its mineral associations in Bistriţa Mts, Romania. In: abstracts of the 22nd IMA Meeting Melbourne: 461
Munteanu, M., Marincea, S., Kasper, H.U., Zak, K., Alexe, V., Trandafir, V., Saptefrati, G., Mihalache, A. (2004): Black chert-hosted manganese deposits from the Bistritei Mountains, Eastern Carpathians (Romania): petrography, genesis and metamorphic evolution. Ore Geology Reviews: 24: 45-66

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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