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Roymillerite from
Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia


03380140015719718938575.jpg
Roymillerite, etc.

Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia
03380140015719718938575.jpg
Roymillerite, etc.

Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia
03337030015712292548159.jpg
Roymillerite, etc.

Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia
Locality type:Mine
Classification
Species:Roymillerite
Formula:Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5
Chemical Analyses:
Oxide wt%:
1
MgO4.93 %
MnO1.24 %
FeO0.95 %
PbO75.38 %
B2O30.50 %
Al2O30.74 %
CO25.83 %
SiO27.90 %
H2O1.8 %
Total:99.27 %
Empirical formulas:
1Pb24.12Mg8.74Mn1.25Fe0.94B1.03Al1.04C9.46Si9.39H14.27O83
Sample references:
1Type Specimen
Chukanov, Nikita V., Jonsson, Erik, Aksenov, Sergey M., Britvin, Sergey N., Rastsvetaeva, Ramiza K., Belakovskiy, Dmitriy I., Van, Konstantin V. (2017) Roymillerite, Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14O4, a new mineral: mineralogical characterization and crystal chemistry. Physics and Chemistry of Minerals, 44 (10) 685-699 doi:10.1007/s00269-017-0893-2
Confirmation
Validity:Valid - Type Locality
Associated Minerals Based on Photo Data:
Rhodochrositeⓘ1 photo of Roymillerite associated with Rhodochrosite at this locality.
Cerussiteⓘ1 photo of Roymillerite associated with Cerussite at this locality.
Jacobsiteⓘ1 photo of Roymillerite associated with Jacobsite at this locality.
Data
Mineral Data:Click here to view Roymillerite data
Locality Data:Click here to view Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia
Data Identifiers
Mindat Occurrence Record ID:1016547
Long-form Identifier:1:3:1016547:6
GUID (UUID V4):fc0152a5-afa8-4ffe-b7b8-3c776ace81fe
References
Mineralogical Magazine, 80, 1135–1144.
HÃ¥lenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter No. 33. Mineralogical Magazine, 80 (6) 1135-1144 doi:10.1180/minmag.2016.080.085
Chukanov, Nikita V., Jonsson, Erik, Aksenov, Sergey M., Britvin, Sergey N., Rastsvetaeva, Ramiza K., Belakovskiy, Dmitriy I., Van, Konstantin V. (2017) Roymillerite, Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14O4, a new mineral: mineralogical characterization and crystal chemistry. Physics and Chemistry of Minerals, 44 (10) 685-699 doi:10.1007/s00269-017-0893-2
Reference Search (possible matching items)
(2023) Roymillerite. Handbook of Mineralogy. Mineralogical Society of America
Report (issue)
Roymillerite Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14O4 Crystal Data: Triclinic. Point group: 1 ....X-ray Powder Pattern: Kombat mine, Otavi Valley, Grootfontein district, northern Namibia. 25.9 (100), 3.282...1.82 100.00 (1) Kombat mine, Otavi Valley, Grootfontein district, northern Namibia; average of 7 electron...the Kombat mine, Otavi Valley, 49 km south of Tsumeb, Grootfontein district, Otjozondjupa region, northern...northern Namibia. Name: Honors Dr. Roy McGillivray Miller (b. 1941) for his contributions to the knowledge
Chukanov, Nikita V., Jonsson, Erik, Aksenov, Sergey M., Britvin, Sergey N., Rastsvetaeva, Ramiza K., Belakovskiy, Dmitriy I., Van, Konstantin V. (2017) Roymillerite, Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14O4, a new mineral: mineralogical characterization and crystal chemistry. Physics and Chemistry of Minerals, 44 (10) 685-699 doi:10.1007/s00269-017-0893-2
Journal (article/letter/editorial)
DOI 10.1007/s00269-017-0893-2 ORIGINAL PAPER Roymillerite, ­Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14O4...Berlin Heidelberg 2017 Abstract The new mineral roymillerite ­Pb24Mg9(Si9AlO28) (SiO4)(BO3)(CO3)10(OH)14O4...assemblage from the Kombat Mine, Grootfontein district, Otjozondjupa region, Namibia, which includes also...grootfonteinite, Mn–Fe oxides, and melanotekite. Roymillerite forms platy single-crystal grains up to 1.5...the empirical formula is equal to 5.973 g/cm3. Roymillerite is optically biaxial, negative, α = 1.86(1)
Cairncross, Bruce (2019) Who's Who in Mineral Names: Roy McGillivray Miller (b. 1941) Rocks & Minerals, 94 (5) 475-476 doi:10.1080/00357529.2019.1624941
Journal (article/letter/editorial)
ac.za D Roy McGillivray Miller (b. 1941) Roymillerite, Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14 O4...of minerals from the Kombat mine in Namibia (Chukanov et al. 2017). Roymillerite is colorless to light...sahlinite. Based on the associated minerals, roymillerite is believed to have been collected by miners...relationship contrasts with two other associated Kombat mine type-species: grootfonteinite, which occurs mainly...which occurs in separate bands. The Kombat mine is located in the Otavi Mountainland and has to-date yielded
HÃ¥lenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter No. 33. Mineralogical Magazine, 80 (6) 1135-1144 doi:10.1180/minmag.2016.080.085
Journal (article/letter/editorial)
Alcaparrosa mine, Cerro Alcaparrosa, Calama commune, El Loa province, Antofagasta region, Chile (22°38′23″S...As)O8]6·n[H2O,Na, [Na(NH4,K)9Cl4][V5+,4+ 2 NH4,K,Cl] Rowley mine (125-foot level), Theba, Painted Rock district,...Tolbachik volcano, Kamchatka Peninsula, Far-Eastern Region, Russia (55°41′N, 160°14′E, 1200 m asl) Igor V...Tolbachik volcano, Kamchatka Peninsula, Far-Eastern Region, Russia (55°41′N, 160°14′E, 1200 m asl) Igor V...1135–1144. IMA No. 2016-042 Pb4Mo4VSbS15 Merelani Region, Tanzania Michael S. Rumsey*, John A. Jaszczak
 
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