Mimetite and polymineralic mimetite-pyromorphite-vanadinite single crystals from the Sowie Mts, Poland

Szełęg, Eligiusz; Janeczek, Janusz; Juroszek, Rafał; Danila, Marta

Mimetite and polymineralic mimetite-pyromorphite-vanadinite single crystals from the Sowie Mts, Poland

Mineralogia

Volume 55 (2024): Issue 1 (January 2024)

By:

Eligiusz Szełęg

, Janusz Janeczek

, Rafał Juroszek

and Marta Danila

Open Access

|Sep 2024

Figures & Tables

SEM images of three morphological varieties of double-terminated mimetite crystals from the quartz-baryte vein in Grodziszcze. Images B, D, and F are close-ups of pyramidal faces of respective crystals A, C, and E.

SEM images of pyromorphite from the quartz-baryte vein in Grodziszcze: (A) bundles of prismatic split-crystals on baryte; (B) aggregates of acicular crystals lining a cavity within baryte.

SEM images of apparent vanadinite crystals from the quartz-baryte vein in Grodziszcze: (A) barrel-shaped crystal on baryte; (B) close-up of the tip of the crystal shown in (A); (C) another split-crystal of apparent vanadinite; (D) details of the sub-individuals of the crystal shown in (C).

Raman spectra of mimetite from Tsumeb (Namibia) and Grodziszcze.

BSE image of vanadinite-mimetite-pyromorphite crystal. Mim – mimetite, Pym – pyromorphite, Vna – vanadinite.

BSE image and X-ray elemental maps of As – Arsenic, V – Vanadium, and P – Phosphorus.

Raman spectra of vanadinite from Mibladen (Morocco) and Grodziszcze.

Ternary plot for mimetite-pyromorphite-vanadinite zones and overgrowths in the polymineralic crystal.

EPMA data for three types of mimetite crystals from Grodziszcze_

	Crystal I				Crystal II			Crystal III
	interior	rim			interior	rim		sectors:
	Average* n = 4	1	2	3	Average* n = 5	1	2	1 n = 2	2 n = 2
	wt%
SiO₂	0.07(0.03-0.10)	0.11	0.22	0.27	0.21(0.13-0.29)	0.22	0.13	0.20	0.25
Bi₂O₃	0.35(0.28-0.46)	0.23	0.37	0.14	0.39(0.19-0.67)	0.27	0.28	0.27	0.23
PbO	73.04(72.31-73.54)	74.30	73.13	74.37	73.36(72.67-73.56)	74.56	73.62	73.34	74.08
CaO	0.08(0.04-0.18)	0.34	0.41	0.24	0.21(0.13-0.29)	0.27	0.77	0.38	0.21
P₂O₅	0.19(0.13-0.24)	1.62	2.24	3.26	0.93(0.82-1.02)	1.40	2.04	1.67	1.08
As₂O₅	22.13(21.91-22.33)	20.17	19.08	17.39	21.13(20.98-21.4)	20.23	19.82	20.31	20.83
V₂O₅	0.02(0.00-0.08)	0.06	0.06	0.10	0.02(0.00-0.08)	0.00	0.00	0.01	0.04
SO₃	0.06(0.01-0.12)	0.05	0.15	0.15	0.07(0.01-0.14)	0.05	0.05	0.09	0.04
Cl	2.28(2.22-2.30)	2.20	2.32	2.28	2.23(2.20-2.25)	2.19	2.24	2.19	2.21
H₂O^c	0.02	0.05	0.02	0.03	0.04	0.05	0.05	0.06	0.04
Total	98.24	99.13	98.00	98.23	98.59	99.24	99.00	98.52	99.01
2Cl=O	0.51	0.50	0.52	0.51	0.50	0.49	0.51	0.49	0.50
Total^c	97.73	98.63	97.48	97.72	98.09	98.75	98.49	98.03	98.51
apfu based on 12.5 anions
Bi	0.023	0.015	0.023	0.009	0.025	0.027	0.018	0.017	0.015
Pb	4.963	4.933	4.842	4.913	4.911	4.977	4.824	4.843	4.944
Ca	0.022	0.090	0.108	0.063	0.043	0.069	0.201	0.100	0.056
Σ	5.008	5.038	4.973	4.985	4.978	5.063	5.043	4.960	5.014
P	0.041	0.338	0.466	0.677	0.196	0.294	0.420	0.347	0.227
As	2.921	2.601	2.453	2.231	2.747	2.623	2.523	2.605	2.700
V	0.003	0.010	0.010	0.010	0.003	0.000	0.000	0.002	0.007
Si	0.018	0.027	0.054	0.066	0.052	0.055	0.032	0.098	0.062
S	0.011	0.009	0.028	0.028	0.013	0.009	0.009	0.017	0.007
Σ	2.994	2.986	3.011	3.012	3.011	2.980	2.984	3.019	3.003
Cl	0.975	0.920	0.967	0.948	0.940	0.920	0.924	0.910	0.928
OH^c	0.025	0.080	0.033	0.052	0.060	0.080	0.076	0.090	0.072
Pym	1	12	16	23	7	10	14	12	8
Mim	99	88	84	77	93	90	86	88	92
Vna	0	0	0	0	0	-	-	0	0

EPMA data for three regions within the polymineral mimetite-pyromorphite-vanadinite crystal shown in Fig_ 5_

Regions	core					intermediate
Spots:	1 PymI +VnaI	2 PymI +VnaI	3 PymI +VnaI	4 PymI +VnaI	5 PymI +VnaI	6 MimI	7 MimI	8 MimI	9 MimI	10 PymIII
wt%
SiO₂	0.04	0.06	0.08	0.11	0.22	0.13	0.09	0.19	0.31	0.04
Bi₂O₃	0.23	0.49	0.42	0.46	0.31	0.46	0.30	0.42	0.20	0.29
PbO	79.60	78.58	77.71	79.09	75.97	73.67	74.64	74.13	72.47	78.89
CaO	0.13	0.56	0.26	0.23	0.17	0.13	0.14	0.12	0.53	0.34
FeO	0.00	0.00	0.00	0.00	0.13	0.00	0.10	0.07	0.00	0.00
ZnO	0.00	0.00	0.14	0.00	0.00	0.11	0.00	0.07	0.00	0.00
P₂O₅	14.23	13.78	12.20	10.40	1.13	0.88	1.52	0.72	1.34	14.13
As₂O₅	1.44	1.40	1.91	2.42	4.37	20.97	19.88	20.98	20.61	1.32
V₂O₅	0.11	0.36	2.27	4.01	13.65	0.00	0.07	0.00	0.00	0.00
SO₃	0.09	0.05	0.17	0.09	0.16	0.00	0.00	0.06	0.08	0.03
Cl	2.39	2.35	2.36	2.33	2.11	2.31	2.26	2.26	2.20	2.32
H₂O^c	0.04	0.05	0.05	0.06	0.09	0.01	0.02	0.02	0.05	0.05
Total	98.30	97.68	97.57	99.20	98.31	98.67	99.02	99.04	97.79	97.41
2Cl = O	0.54	0.53	0.53	0.53	0.48	0.52	0.51	0.51	0.50	0.52
Total^cor	97.76	97.15	97.04	98.67	97.83	98.15	98.51	98.53	97.29	96.89
apfu based on 12.5 anions
Bi	0.02	0.04	0.04	0.03	0.03	0.04	0.03	0.04	0.02	0.03
Pb	4.95	4.92	4.84	4.93	4.89	4.98	5.03	5.01	4.81	4.96
Ca	0.03	0.14	0.06	0.06	0.04	0.03	0.04	0.03	0.14	0.09
Fe	0.00	0.00	0.00	0.00	0.03	0.00	0.02	0.01	0.00	0.00
Zn	0.00	0.00	0.02	0.00	0.00	0.02	0.00	0.01	0.00	0.00
Σ	5.00	5.07	5.00	5.05	4.99	5.07	5.12	5.10	5.21	5.28
P	2.78	2.71	2.39	2.04	0.23	0.19	0.32	0.15	0.28	2.80
As	0.17	0.17	0.23	0.29	0.55	2.75	2.60	2.75	2.66	0.16
V	0.02	0.06	0.35	0.61	2.16	0.00	0.01	0.00	0.00	0.00
Si	0.01	0.01	0.02	0.03	0.05	0.03	0.02	0.05	0.08	0.01
S	0.02	0.01	0.03	0.02	0.03	0.00	0.00	0.01	0.01	0.01
Σ	3.00	2.94	3.01	2.96	3.02	2.97	2.91	2.96	3.19	3.10
Cl	0.94	0.93	0.93	0.91	0.85	0.98	0.96	0.96	0.92	0.92
OH^c	0.06	0.08	0.07	0.09	0.15	0.02	0.04	0.04	0.08	0.08
Pym	94	92	80	69	8	6.5	11	5	9.5	95
Mim	6	6	8	10	19	93.5	89	95	90.5	5
Vna	0	2	12	21	73	0	0	0	0	0
Regions	intermediate					outermost
Spots:	11 MimII	12 MimII	13 MimII	14 VnaIII	15 VnaIII	16 VnaIII	17 VnaIII	18 VnaIII	19 VnaIII	20 VnaIII
SiO₂	0.09	0.07	0.01	0.14	0.17	0.26	0.32	0.28	0.38	0.43
Bi₂O₃	0.36	0.17	0.37	0.39	0.43	0.37	0.32	0.15	0.52	0.29
PbO	73.53	75.15	73.98	75.41	75.67	76.00	76.39	76.94	75.39	75.46
CaO	0.57	0.21	0.21	0.04	0.03	0.05	0.01	0.03	0.10	0.05
FeO	0.00	0.04	0.16	0.11	0.00	0.00	0.01	0.00	0.05	0.18
ZnO	0.00	0.08	0.16	0.00	0.00	0.00	0.01	0.00	0.05	0.18
P₂O₅	1.40	2.09	1.59	0.37	0.26	0.31	0.20	0.21	0.70	0.49
As₂O₅	20.59	19.49	20.25	1.38	0.93	1.31	0.55	0.58	3.10	1.58
V₂O₅	0.11	0.05	0.08	19.46	19.11	18.99	20.09	19.46	16.81	17.54
SO₃	0.14	0.09	0.07	0.07	0.03	0.08	0.05	0.15	0.03	0.02
Cl	2.18	2.32	2.03	2.21	2.17	2.27	2.22	2.15	2.15	2.15
H₂O^c	0.06	0.02	0.09	0.11	0.10	0.09	0.11	0.11	0.11	0.10
Total	99.03	99.78	99.00	99.69	98.90	99.73	100.28	100.06	99.39	98.37
2Cl = O	0.49	0.52	0.46	0.50	0.49	0.51	0.49	0.49	0.49	0.49
Total^cor	98.54	99.26	98.54	99.19	98.41	99.22	99.79	99.57	98.90	97.88
apfu based on 12.5 anions
Bi	0.03	0.02	0.03	0.03	0.04	0.03	0.03	0.01	0.05	0.03
Pb	4.84	4.96	4.91	4.55	4.69	4.64	4.61	4.70	4.63	4.72
Ca	0.15	0.06	0.06	0.01	0.01	0.01	0.00	0.01	0.02	0.01
Fe	0.00	0.01	0.03	0.02	0.00	0.00	0.00	0.00	0.01	0.04
Zn	0.00	0.01	0.03	0.00	0.00	0.00	0.00	0.00	0.01	0.03
Σ	4.87	5.06	5.06	4.61	4.74	4.68	4.64	4.72	4.72	4.83
P	0.29	0.43	0.33	0.07	0.05	0.06	0.04	0.04	0.14	0.10
As	2.63	2.50	2.61	0.16	0.11	0.16	0.06	0.07	0.37	0.19
V	0.02	0.01	0.01	2.88	2.91	2.85	2.97	2.92	2.53	2.70
Si	0.02	0.02	0.00	0.03	0.04	0.06	0.07	0.06	0.09	0.10
S	0.03	0.02	0.01	0.01	0.01	0.01	0.01	0.04	0.01	0.00
Σ	2.99	2.98	2.96	3.15	3.12	3.14	3.15	3.13	3.14	3.09
Cl	0.90	0.96	0.85	0.84	0.85	0.87	0.84	0.83	0.83	0.85
OH^c	0.10	0.04	0.15	0.16	0.15	0.13	0.16	0.17	0.17	0.15
Pym	15	15	11	2	2	2	1	1.3	5	3
Mim	85	85	89	5	3	5	2	2.3	12	7
Vna	0	0	0	93	95	93	97	96.4	83	90

DOI: https://doi.org/10.2478/mipo-2024-0005 | Journal eISSN: 1899-8526 | Journal ISSN: 1899-8291

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Language: English

Page range: 48 - 59

Submitted on: Jan 7, 2024

Accepted on: Jul 31, 2024

Published on: Sep 26, 2024

Published by: Mineralogical Society of Poland

In partnership with: Paradigm Publishing Services

Publication frequency: 1 times per year

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© 2024 Eligiusz Szełęg, Janusz Janeczek, Rafał Juroszek, Marta Danila, published by Mineralogical Society of Poland
This work is licensed under the Creative Commons Attribution 4.0 License.

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Mimetite and polymineralic mimetite-pyromorphite-vanadinite single crystals from the Sowie Mts, Poland

Figures & Tables

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

EPMA data for three types of mimetite crystals from Grodziszcze_

EPMA data for three regions within the polymineral mimetite-pyromorphite-vanadinite crystal shown in Fig_ 5_

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