| Locality type: | Mine |
| Classification |
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| Species: | Ferronigerite-2N1S |
| Formula: | (Al,Fe,Zn)2(Al,Sn)6O11(OH) |
| Comments: | The reference for ferronigerite-2N1S is from 1965 and it's unclear which local mine was sampled. The author's analysis is of ferronigerite, however (although not done with modern in-situ methods). Nonetheless, newer EPMA data show zinconigerite-2N1S is present from the Seixoso mine. So even if both species are present, they would not appear to be distinguishable from hand sample properties alone. So ID should ideally be "ferronigerite-2N1S/zinconigerite-2N1S series" in lieu of analytical data confirming one or the other end-member. EPMA analyses on purported ferronigerite-2N1S from this specific mine would be valuable to confirm the presence of the species at this locality. (FKM) |
| Confirmation |
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| Validity: | Unconfirmed/Questioned |
| Data |
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| Mineral Data: | Click here to view Ferronigerite-2N1S data |
| Locality Data: | Click here to view Seixoso Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1267883 |
| Long-form Identifier: | 1:3:1267883:1 |
| GUID (UUID V4): | 44adaa76-9bcc-4f2b-9897-f56860b5f05c |
| Nearest other occurrences of Ferronigerite-2N1S |
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| 0.3km (0.2 miles) | ⓘTapada da Bemposta No.1 Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal |
| 9.8km (6.1 miles) | ⓘVieiros Mines, Rebordelo, Amarante, Porto, Portugal |
| 44.5km (27.7 miles) | ⓘLousas aplite-pegmatite, Barroso-Alvão pegmatite field, Vila Real, Portugal |
| 66.0km (41.0 miles) | ⓘCabanas Mine, Arcozelo, Ponte de Lima, Viana do Castelo, Portugal |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | W here of M ineral N ames Nigerite (Now Ferronigerite-2N1S) BRUCE CAIRNCROSS Department of Geology...Africa brucec@uj.ac.za Figure 1. The Three Aloes mine, situated approximately 30 kilometers southeast...of the Kogi district, the type locality of ferronigerite-2N1S. The Jos Plateau is located primarily in...forming the nigerite group are ferronigerite-6N6S, magnesionigerite-2N1S, magVolume 95, July/August 2020 ...ferronigerite2N1S crystals, one in matrix, from the Three Aloes mine, Namibia. Collected in 2011. The single crystal |
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Seixoso Mine, Seixoso Mining Field, Borba de Godim, Vila Cova da Lixa e Borba de Godim, Felgueiras, Porto, Portugal