Cerchiaraite-(Fe) from
Madrelena Mine, Tres Pozos, Baja California, Mexico
Locality type: | Mine | |
Classification | ||
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Species: | Cerchiaraite-(Fe) | |
Formula: | Ba4Fe43+O3(OH)3(Si4O12)[Si2O3(OH)4]Cl | |
Comments: | sparse orange (also patchy blue) to colorless pleochroism enlongate crystals in thin section (plane-polarized light), associated with sanbornite (along with titantaramellite, gillespite, and others). Chemical analysis (wt%, by EPMA): SiO2 28.07 TiO2 0.05 (corrected for interference of Ba on Ti) SnO2 0.01 Al2O3 5.71 V2O3 0.04 (corrected for interferences of Ba and Ti on V) Fe2O3 11.02 (all Fe calculated as Fe3+) Mn2O3 0.45 (all Mn calculated as Mn3+) MgO 0.91 CaO 0.03 SrO 0.11 BaO 43.49 Na2O 0.08 K2O 0.01 F 0.22 Cl 2.21 H2O 6.01 (calculated by stoichiometry, based on 10 OH+F+Cl, based on formula of Kampf et al., 2013) TOTAL 98.19 (includes ∑(minor elements) and -O=(F+Cl)) sought but below detection limit: P, S, Sc, Cr, Zr, Ga, Co, Ni, Zn normalized to 22 oxygen equivalent, assuming ∑Fe=Fe3+ and ∑Mn=Mn3+: (Ba3.85Na0.04Sr0.01Ca0.01)∑3.91(Fe[III]1.86Al1.51Mg0.30Mn[III]0.08Ti0.01V0.01)∑3.77(Si6.30)O5(OH)8[(OH)1.00Cl0.84F0.16]∑10.00 | |
Colour: | orange (also patchy blue) to colorless pleochroism in thin section | |
Confirmation | ||
Validity: | Confirmed | |
Confirmation Methods: | Polarised-light microscopy EPMA | |
Associated Minerals Based on Photo Data: | ||
Sanbornite | ⓘ4 photos of Cerchiaraite-(Fe) associated with Sanbornite at this locality. | |
Titantaramellite | ⓘ4 photos of Cerchiaraite-(Fe) associated with Titantaramellite at this locality. | |
Quartz | ⓘ2 photos of Cerchiaraite-(Fe) associated with Quartz at this locality. | |
Data | ||
Mineral Data: | Click here to view Cerchiaraite-(Fe) data | |
Locality Data: | Click here to view Madrelena Mine, Tres Pozos, Baja California, Mexico | |
Data Identifiers | ||
Mindat Occurrence Record ID: | 858239 | |
Long-form Identifier: | 1:3:858239:3 | |
GUID (UUID V4): | f2070fd3-a9c1-4f75-981a-28def50575cc | |
References | ||
Madrelena Mine, Tres Pozos, Baja California, Mexico