Parvowinchite
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About Parvowinchite
Synonym of:
This page provides mineralogical data about Parvowinchite.
Unique Identifiers
Mindat ID:
43529
Long-form identifier:
mindat:1:1:43529:3
Similar Names
| Parvowinchit | A synonym of Ferri-ghoseite | ◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 |
Chemical Analysis
Oxide wt%:
| 1 | 2 | |
|---|---|---|
| SiO2 | 56.34 % | 55.73 % |
| Al2O3 | 0.96 % | 0.62 % |
| TiO2 | 0.00 % | |
| Fe2O3 | 7.44 % | |
| FeO | 3.14 % | 6.46 % |
| MgO | 17.32 % | 17.42 % |
| MnO | 4.61 % | 11.44 % |
| CaO | 1.32 % | 0.63 % |
| Na2O | 6.55 % | 4.31 % |
| K2O | 0.17 % | 0.14 % |
| F | 0.29 % | |
| H2O | 2.12 % | |
| O=F | 0.12 % | |
| Total: | 99.97 % | 97.16 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | A(Na0.45K0.0,3)B0.48( (Na1.34Ca0.20Mn0.46) C2.00( (Mg3.64Fe2+0.37Mn2+0.09Fe3+0.79Ti0.00Al0.11) 5.00 T( (Si7.95Al0.05) 8.00OW22( (OH) 2.00) |
| 2 | A(Na0.18K0.0,05)0.23 B( (Na0.99Ca0.10Mn0.91) 2.00 C( (Mg3.70Mn2+0.47Fe3+0.77Al0.07) 5.00 T( (Si7.95Al0.05) 8.00O22 W( (OH) 1.87F0.13) 2.00 |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | South Tirodi Mine, Tirodi, Balaghat District, Jabalpur Division, Madhya Pradesh, India | A Cameca Camebax electron microprobe operated at 15 kV and a beam current of l0 nA was used to analyze amphiboles. A Philips CM-12 scanning transmission electron microscope (STEM) equipped with a Kevex Quantum detector (EDS system) was used for TEM and AEM analyses. Selected-area electron difraction (SAED) patterns and multibeam images were obtained in the TEM mode, whereas AEM analyses were acquired in scanning mode. Fe3+ and H2O was calculated | |
| 2 | Iimori mine, Afuzu-mura, Iwade city, Wakayama Prefecture, Japan | BANNO, Yasuyuki, MOMMA, Koichi, MIYAWAKI, Ritsuro, YAMADA, Shigeo (2019) New data on ferri–ghoseite in Sanbagawa quartz schist from the Iimori region, Wakayama Prefecture, Japan: solid solution between magnesio–riebeckite and clino–suenoite. Journal of Mineralogical and Petrological Sciences, 114 (1) 33-40 doi:10.2465/jmps.181109 | Chemical analyses of the amphibole were performed on JEOL JXA–8800R and JEOL JXA–8900R electron microprobes at the GSJ Laboratory, AIST. Based on the relatively high oxygen fugacity indicated by the high Fe3+/(Fe2++Fe3+) ratios (0.99–1.0) of associated aegirine and garnet (Banno and Yamada, 2012), the Fe3+/Fe2+ ratios of the amphibole were estimated using the maximum ferric method of Leake et al. (1997). Total Mn was expressed as Mn2+, because, in this way, formulae calculated using the maximum ferric method satisfied the six criteria for calculation of amphibole formulae outlined by Leake et al. (1997). The amphibole is pale yellowish green and occurs as euhedral to subhedral crystals with lengths up to 500µm. |
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0006506 | Ferri-ghoseite | Oberti R, Ghose S (1993) Crystal-chemistry of a complex Mn-bearing alkali amphibole ("tirodite") on the verge of exsolution European Journal of Mineralogy 5 1153-1160 | 1993 | 0 | 293 |
CIF Raw Data - click here to close
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Parvowinchite
mindat.org URL:
https://www.mindat.org/min-43529.html
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References for Parvowinchite
Reference List:
Localities for Parvowinchite
Showing 24 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Gozaisho Mine, Iwaki City, Fukushima Prefecture, Japan