Bixbyite occurrence, Valle de las Plumas, Las Plumas, Mártires Department, Chubut Province, Argentinai
| Regional Level Types | |
|---|---|
| Bixbyite occurrence | Occurrence |
| Valle de las Plumas | Valley |
| Las Plumas | Village |
| Mártires Department | Department |
| Chubut Province | Province |
| Argentina | Country |
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Latitude & Longitude (WGS84):
43° 42' 57'' South , 67° 25' 51'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
246841
Long-form identifier:
mindat:1:2:246841:2
GUID (UUID V4):
a98beee4-01c4-4ab0-84cb-3c20670af5f5
Elevation: 183 m a.s.l.
Brecciated quartz vein cutting trachyte.
Bixbyite: Brecciated quartz in a lava guides trachytic. Determined by XRD, infrared spectroscopy and electron microprobe. Likely origin pneumatolytic. Crystals between 2 and 15 mm in diameter, shiny black metallic; opaque even in very thin slivers; the streak is black; the hardness is somewhat lower than 7 but greater than 6, the density is 4.744, rather low due to inclusions of quartz. It is fragile, the cleavage is perfect on {100}. The crystals show icositetrahedron hub combinations. There are nicks and grooves on the surfaces of the crystals.
Valle de Las Plumas Bixbyite analysis:
SiO2: 0.51 %
AL2O3: -
Fe2O3: 48.95 %
Mn2O3: 46.04 %
TiO2: 2.05 %
Total: 98.45 %
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 References: |
| ⓘ Bixbyite-(Fe) Formula: (Fe,Mn)2O3 |
| ✪ Bixbyite-(Mn) ? Formula: Mn3+2O3 Habit: Large, but crude distorted crystals. Colour: Black Description: Analysis given on this page indicates slight dominance of Fe over Mn (see https://www.mindat.org/mesg-589846.html). References: |
| ⓘ Hematite Formula: Fe2O3 References: |
| ⓘ Ilmenite Formula: Fe2+TiO3 References: |
| ⓘ Orthoclase Formula: K(AlSi3O8) References: |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 References: |
| ⓘ Quartz Formula: SiO2 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Bixbyite-(Mn) ? | 4.CB.10 | Mn3+2O3 |
| ⓘ | Bixbyite-(Fe) | 4.CB.10 | (Fe,Mn)2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Orthoclase | 9.FA.30 | K(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | Oxygen | |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Bixbyite-(Mn) | Mn23+O3 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Orthoclase | K(AlSi3O8) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Bixbyite-(Fe) | (Fe,Mn)2O3 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | Aluminium | |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Orthoclase | K(AlSi3O8) |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Orthoclase | K(AlSi3O8) |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Orthoclase | K(AlSi3O8) |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Mn | Manganese | |
| Mn | ⓘ Bixbyite-(Mn) | Mn23+O3 |
| Mn | ⓘ Bixbyite-(Fe) | (Fe,Mn)2O3 |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Bixbyite-(Fe) | (Fe,Mn)2O3 |
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References
