Poço d'Antas claim, Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazili
| Regional Level Types | |
|---|---|
| Poço d'Antas claim | Claim |
| Piauí Valley | River Valley |
| Taquaral | Town |
| Itinga | Municipality |
| Minas Gerais | State |
| Brazil | Country |
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Latitude & Longitude (WGS84):
16° South , 41° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~9km
Type:
Köppen climate type:
Name(s) in local language(s):
Lavra do Poço d'Antas
Granite pegmatite.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) References: |
| ⓘ Atencioite Formula: Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O |
| ⓘ Berlinite Formula: AlPO4 References: |
| ⓘ Beryllonite Formula: NaBePO4 References: |
| ⓘ Childrenite Formula: Fe2+Al(PO4)(OH)2 · H2O Description: see: http://www.mindat.org/forum.php?read,6,206759,206786
Note that most such specimens from this locality turn out to be eosphorite on analysis, although Fe-dominant samples are known, so analysis is required for accurate attribution. Analyst Joan Viñals comments on a disputed Fe-rich analysis as follows: "The samples in question were clearly members of the childrenite-eosphorite series (see XRD), but with predominance of “childrenite” because, semiquantitatively, it was clear that Fe>Mn. If you see the EDS spectra, you can recognize the X-ray peaks in order of increasing energy (or atomic number) from left to right. The first peak was Al (Kα plus a small Kβ completely overlapped). Then P (Kα plus a small Kβ partially overlapped). Then Ca Kα and a small Ca Kβ well resolved. Then Mn Kα . Then Fe Kα plus a small Mn Kβ overlapped and finally Fe Kβ. According this and comparing the Fe Kα and Mn Kα peaks it can semiquantitatively conclude that Fe>Mn. Probably, the confusion was in the labels of the peaks in the printed spectrum. It appears Mn as an apparent label of the Fe Kα. However, note that the true peak label is always some at the left of the peaks." References: |
| ⓘ 'Childrenite-Eosphorite Series' References: |
| ⓘ Eosphorite Formula: Mn2+Al(PO4)(OH)2 · H2O Description: The late-stage Fe-Mn assemblage quoted is Mn-rich. (But note that Fe-dominant material (childrenite) has also been found at the locality.) References: |
| ⓘ Hureaulite Formula: Mn2+5(PO3OH)2(PO4)2 · 4H2O References: |
| ⓘ Hydroxylherderite Formula: CaBe(PO4)(OH) References: |
| ⓘ Microcline Formula: K(AlSi3O8) References: |
| ⓘ Milarite Formula: K(◻H2O)Ca2(Be2Al)[Si12O30] References: |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 References: |
| ⓘ Prehnite ? Formula: Ca2Al2Si3O10(OH)2 References: Martins da Pedra specimenIdentification: Visual Identification |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ 'Roscherite Group' Description: The only verified member of the roscherite group at this locality is ruifrancoite, although other members of the group may be present. |
| ⓘ Ruifrancoite Formula: Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Berlinite | 8.AA.05 | AlPO4 |
| ⓘ | Beryllonite | 8.AA.10 | NaBePO4 |
| ⓘ | Hydroxylherderite | 8.BA.10 | CaBe(PO4)(OH) |
| ⓘ | Hureaulite | 8.CB.10 | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
| ⓘ | Atencioite | 8.DA.10 | Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O |
| ⓘ | Ruifrancoite | 8.DA.10 | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| ⓘ | Childrenite | 8.DD.20 | Fe2+Al(PO4)(OH)2 · H2O |
| ⓘ | Eosphorite | 8.DD.20 | Mn2+Al(PO4)(OH)2 · H2O |
| Group 9 - Silicates | |||
| ⓘ | Milarite | 9.CM.05 | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| ⓘ | Prehnite ? | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Childrenite-Eosphorite Series' | - | |
| ⓘ | 'Roscherite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| H | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| H | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| H | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| H | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| H | ⓘ Childrenite-Eosphorite Series | |
| H | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| H | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| Be | Beryllium | |
| Be | ⓘ Beryllonite | NaBePO4 |
| Be | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| Be | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| Be | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| Be | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Berlinite | AlPO4 |
| O | ⓘ Beryllonite | NaBePO4 |
| O | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| O | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| O | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| O | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Childrenite-Eosphorite Series | |
| O | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| O | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Beryllonite | NaBePO4 |
| Mg | Magnesium | |
| Mg | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| Mg | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Berlinite | AlPO4 |
| Al | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| Al | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Al | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | ⓘ Childrenite-Eosphorite Series | |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Berlinite | AlPO4 |
| P | ⓘ Beryllonite | NaBePO4 |
| P | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| P | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| P | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| P | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| P | ⓘ Childrenite-Eosphorite Series | |
| P | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| P | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| K | Potassium | |
| K | ⓘ Microcline | K(AlSi3O8) |
| K | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Hydroxylherderite | CaBe(PO4)(OH) |
| Ca | ⓘ Milarite | K(◻H2O)Ca2(Be2Al)[Si12O30] |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Ca | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| Ca | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| Mn | Manganese | |
| Mn | ⓘ Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| Mn | ⓘ Hureaulite | Mn52+(PO3OH)2(PO4)2 · 4H2O |
| Mn | ⓘ Childrenite-Eosphorite Series | |
| Mn | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| Fe | Iron | |
| Fe | ⓘ Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
| Fe | ⓘ Childrenite-Eosphorite Series | |
| Fe | ⓘ Atencioite | Ca2Fe32+Mg2Be4(PO4)6(OH)4 · 6H2O |
| Fe | ⓘ Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
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Poço d'Antas claim, Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazil