1-20 OF 100 RESULTS FOR

sugilite

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 August 2011
European Journal of Mineralogy (2011) 23 (4): 661–673.
...John M. Moore; Barbara K. Kuhn; Darren F. Mark; Harilaos Tsikos Abstract An occurrence of the alkali-rich, Fe-Mn silicate sugilite [KNa 2 (Fe 3+ , Mn 3+ , Al) 2 Li 3 Si 12 O 30 ] is reported from the Wolhaarkop manganese-rich chert breccia at the Bruce iron-ore mine, Northern Cape Province, South...
FIGURES | View All (7)
Journal Article
Published: 01 August 2009
The Canadian Mineralogist (2009) 47 (4): 927–931.
...Charles A. Geiger Abstract Sugilite, ideally KNa 2 (Fe 3+ ,Mn 3+ ,Al) 2 Li 3 Si 12 O 30 , from the Wessels mine, Kalahari, South Africa, was studied using 57 Fe Mössbauer spectroscopy. The spectra confirm published electron-microprobe data and X-ray single-crystal results, which indicate that Fe 3...
FIGURES | View All (4)
Journal Article
Published: 01 January 2003
American Mineralogist (2003) 88 (1): 189–194.
...Edwin Gnos; Thomas Armbruster; Igor M. Villa Abstract Norrishite, K(Mn 2 3+ Li)Si 4 O 10 (O) 2 , an OH-free mica, is found in a silicate-rich sample from the Wessels mine, Kalahari manganese field, South Africa. The mineral forms centimeter-sized black aggregates in dark-purple sugilite...
FIGURES
Journal Article
Published: 01 December 1994
Mineralogical Magazine (1994) 58 (4): 671–677.
Journal Article
Published: 01 December 1994
Mineralogical Magazine (1994) 58 (4): 679–681.
Journal Article
Published: 01 June 1988
American Mineralogist (1988) 73 (5-6): 595–600.
...Thomas Armbruster; Roland Oberhaensli Abstract The crystal structures of sugilite, Na 2 K(Fe 3+ ,Mn 3+ ,Al) 2 Li 3 Si 12 O 30 , a = 10.009(2) Å, c = 14.006(3) Å, from the Wessels mine, Kalahari (South Africa), and brannockite, KSn 2 Li 3 Si 12 O 30 , a = 10.002(2) Å, c = 14.263(3) Å from the Foote...
Journal Article
Published: 01 April 1985
South African Journal of Geology (1985) 88 (1): 11–17.
Journal Article
Published: 01 February 1980
The Canadian Mineralogist (1980) 18 (1): 37–39.
Image
Thin section photographs. (a) Slide containing an unzoned <span class="search-highlight">sugilite</span>-bearing ...
Published: 01 August 2011
Fig. 3. Thin section photographs. (a) Slide containing an unzoned sugilite-bearing assemblage from upper locality WB-T1 (width: 24 mm). (b) Slide containing zoned sugilite-bearing assemblages from lower locality WB-T2 (width: 26 mm). (c–e) Photomicrographs under transmitted light of broadly
Journal Article
Published: 01 December 1994
Mineralogical Magazine (1994) 58 (4): 681–685.
Image
Comparative ternary Al-Fe-Mn plot illustrating the variation in mineral che...
Published: 01 August 2011
Fig. 6. Comparative ternary Al-Fe-Mn plot illustrating the variation in mineral chemistry of sugilite from both sampled localities of borehole AKH49, along with compositional fields from other localities (see text for references). Note the contrasting compositional range of the Bruce sugilites
Image
Occurrence and crystal morphology of lipuite: ( a ) euhedral platy dark cry...
Published: 26 February 2019
Fig. 1. Occurrence and crystal morphology of lipuite: ( a ) euhedral platy dark crystals of lipuite (Lip) with pink-coloured sugilite (Sug), image width = 2 cm, type specimen R140946 stored in the Mineral Museum of the University of Arizona; ( b ) lipuite–sugilite–pectolite (Pet) crust
Image
a) Crystal-structure model of <span class="search-highlight">sugilite</span> projected down the  c  axis. The red...
Published: 01 August 2009
F ig . 2. a) Crystal-structure model of sugilite projected down the c axis. The red tetrahedra are SiO 4 groups ( T 1), the dark blue octahedra represent Fe 3+ O 6 groups ( A ), and the light blue tetrahedra represent LiO 4 groups ( T 2). The green spheres are K atoms, and the Na atoms
Image
a) Crystal-structure model of <span class="search-highlight">sugilite</span> projected down the  c  axis. The red...
Published: 01 August 2009
F ig . 2. a) Crystal-structure model of sugilite projected down the c axis. The red tetrahedra are SiO 4 groups ( T 1), the dark blue octahedra represent Fe 3+ O 6 groups ( A ), and the light blue tetrahedra represent LiO 4 groups ( T 2). The green spheres are K atoms, and the Na atoms
Image
Backscattered electron image of hydroxymcglassonite-(K), associated with me...
Published: 01 September 2022
Figure 4. Backscattered electron image of hydroxymcglassonite-(K), associated with meieranite and sugilite. (Color online.)
Image
SELECTED INTERATOMIC DISTANCES (Å) IN <span class="search-highlight">SUGILITE</span>*
Published: 01 September 2016
TABLE 3. SELECTED INTERATOMIC DISTANCES (Å) IN SUGILITE*
Journal Article
Published: 25 March 2021
The Canadian Mineralogist (2021) 59 (2): 431–444.
..., Kalahari manganese field, South Africa. Both minerals occur as brown radiating groups or aggregates of acicular or prismatic crystals, with individual crystals up to 0.15 × 0.04 × 0.02 mm for taniajacoite and 1.3 × 0.2 × 0.2 mm for strontioruizite. Minerals associated with taniajacoite include sugilite...
FIGURES | View All (8)
Image
A microscopic view of meieranite, associated with pale green <span class="search-highlight">sugilite</span>.
Published: 15 July 2019
Fig. 2. A microscopic view of meieranite, associated with pale green sugilite.
Image
<span class="search-highlight">Sugilite</span>, KNa 2 (Fe 3+ ,Mn 3+ ,Al) 2 Li 3 Si 12 O 30 , in manganese ore fro...
Published: 01 August 2020
Figure 5. Sugilite, KNa 2 (Fe 3+ ,Mn 3+ ,Al) 2 Li 3 Si 12 O 30 , in manganese ore from the N’Chwaning III Mine, Kalahari manganese field, Northern Cape Province (South Africa). E dward S. G rew personal collection ; P hoto courtesy of P riscilla C. G rew .
Image
<span class="search-highlight">SUGILITE</span>: MÖSSBAUER FIT PARAMETERS #
Published: 01 August 2009
TABLE 1. SUGILITE: MÖSSBAUER FIT PARAMETERS #