Some Problems of the studies on the manganese minerals in Japan

Hirowatari, Fumitoshi; Fukuoka, Masato

doi:10.2465/gkk1952.18.347

Cited by 7 publications

(5 citation statements)

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“…Compositions from the same locality tend to spread along a zone of restricted Fe-Mn ratios, and Cabella et aL (1990) reported a reciprocal relationship between Mn203 and A1203 contents for lowFe203 sugilite from Cerchiara mine. A similar reciprocal relationship is seen by the spread of analyses for more Mn-and Fe-rich Furumiya mine sugilite (Hirowatari and Fukuoka, 1988) and the still more Fe-rich Wessels mine sugilite (Dunn et a/., 1980;Dixon, 1985Dixon, , 1989Armbruster et al, 1993). For Furumiya mine and Wessels mine sugilite, as well as sugilite from Hoskins and Woods mines, a reciprocal relation between atomic A1 and (YFe + Y.Mn) is displayed in Fig.…”

Section: Discussionmentioning

confidence: 61%

“…Relationship between a (,~,) and atomic A1/ (A1 + EFe + XMn) for sugilite from various localities. Data sources: Cerchiara (Cabella et al, 1990), Furumiya (Hirowatari and Fukuoka, 1988), Hoskins (820994, this paper), Iwagi , Madhya Pradesh (Clark et al, 1980), Wessels (Dunn et al, 1980), and Woods cores and rims (OU63701, this paper). (Cabella et aL, 1990), Furumiya (l-Iirowatari andFukuoka, 1988), Hoskins (820994, this paper), Iwagi , Madhya Pradesh (Clark et al, 1980), Wessels (Dunn et aL, 1980), and Woods cores and rims (OU63701, this paper).…”

Section: Discussionmentioning

confidence: 99%

“…Atomic AI-EFe-EMn diagram for sugilite from various localities. Data sources: Cerchiara (Cabella et al, 1990), Furumiya (Hirowatari and Fukuoka 1988), Hoskins (820993 and 820994, this paper), Iwagi , Madhya Pradesh (Clark et al, 1980), Wessels (Dunn et al, 1980;Dixon, 1985Dixon, , 1989Armbruster et al, 1993), and Woods cores and rims (OU63701, this paper). Two analyses (Nos.…”

Section: : Mn 3 §mentioning

confidence: 99%

“…Careful analyses of sugifite and other members of the milarite group, however, often show the presence of water Kato et al, 1976;Cern~ et al, 1980). It has subsequently been recorded from metamorphosed manganese silicate-oxide rocks (Dunn et al, 1980;Clark et al, 1980;Dixon, 1985Dixon, , 1989Hirowatari and Fukuoka, 1988;Cabella et aL, 1990;Armbruster et al, 1993). Although the initial occurrence in syenite was Mnfree, sugilite reported from manganese deposits is Mn-bearing and coexists with other Mn-and alkalibearing minerals.…”

Section: Introductionmentioning

confidence: 99%

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Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia

et al. 1994

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Sugilite relatively rich in manganese has been found at two new localities, the Hoskins and Woods mines in New South Wales, Australia. The occurrences are in manganese-rich silicate rocks of middle to upper greenschist facies (Hoskins mine) and hornblende hornfels facies (Woods mine). Coexisting minerals are members of the namansilite-aegirine and pectolite-serandite series, Mn-rich alkali amphiboles, alkali feldspar, braunite, rhodonite, tephroite, albite, microcline, norrishite, witherite, manganoan calcite, quartz, and several unidentified minerals. Woods mine sugilite is colour-zoned with pale mauve cores and colourless rims, whereas Hoskins mine sugilite is only weakly colour-zoned and pink to mauve. Within single samples, the chemical compositions of sugilite from both localities show wide ranges in A1 contents and less variable ranges of Fe and Mn, similar to trends in sugilite from other localities. The refractive indices and cell dimensions tend to show systematic increases progressing from Al-rich to FeMn-rich. The formation of the sugilite is controlled by the high alkali (especially Li) and manganese contents of the country rock, reflected in the occurrences of coexisting high alkali-and manganesebearing minerals, and by high fo2 conditions.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: : Mn 3 §mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia

et al. 1994

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“…Both specimens are insoluble in hydrochloric acid (HCl), nitrous acid (HNO 3 ) and sulfuric acid (H 2 SO 4 ), according to chemical tests performed after the method of Jones and Fleming (1965).…”

Section: Appearance Physical and Optical Propertiesmentioning

confidence: 99%

Aluminosugilite, KNa2Al2Li3Si12O30, an Al analogue of sugilite, from the Cerchiara mine, Liguria, Italy

Nagashima

Fukuda²,

Matsumoto

et al. 2020

Eur. J. Mineral.

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Abstract. Aluminosugilite (IMA2018-142), ideal formula KNa2Al2Li3Si12O30, is a new mineral that was found in the interstices in manganiferous metacherts from the Cerchiara mine, Liguria, Italy. Aluminosugilite is an Al analogue of sugilite belonging to the milarite group. It occurs as aggregates of small prismatic and/or granular crystals up to 1 mm in length, and it is pinkish-purple with a pale purple to white streak and a vitreous lustre. It has a Mohs hardness of 6–6.5. Its cleavage is indistinct, poor on (0001). Measured and calculated densities are Dmeas.=2.71–2.72 g cm−3 and Dcalc.=2.73 g cm−3, respectively. Aluminosugilite is optically uniaxial (–), with ω=1.577–1.586 and ε=1.575–1.585, with a weak pleochroism. The magnetic susceptibility is lower than that for sugilite. Aluminosugilite is insoluble in HCl, HNO3 and H2SO4, like sugilite. The empirical formula of aluminosugilite calculated on the basis of O =30 from the result obtained by electron microprobe analysis and laser-induced breakdown spectroscopy is K0.99Na1.99(Al1.38Mn0.313+Fe0.243+Ti0.05Mg0.01)Σ1.99Li3.06Si11.99O30. Structure refinement converged to R1=2.17 %. Its space group is hexagonal P6∕mcc, with unit-cell parameters a=9.9830(4) Å, c=13.9667(5) Å and V=1205.45(7) Å3. Based on the refined site occupancies, the ideal structural formula of aluminosugilite is CKBNa2AAl2T2Li3T1Si12O30. The variation of the A–O3 distance is governed by the cationic substitution at the A site. The a and c dimensions of aluminosugilite are shorter than those of sugilite due to Al substitution for Fe3+ at the A site.

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Vibrational spectra of BaMn(CO3)2 and a re-analysis of the Raman spectrum of BaMg(CO3)2

Schmidt¹,

Gehlken²,

Böttcher³

2013

ejm

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Some Problems of the studies on the manganese minerals in Japan

Cited by 7 publications

References 0 publications

Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia

Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia

Aluminosugilite, KNa<sub>2</sub>Al<sub>2</sub>Li<sub>3</sub>Si<sub>12</sub>O<sub>30</sub>, an Al analogue of sugilite, from the Cerchiara mine, Liguria, Italy

Vibrational spectra of BaMn(CO3)2 and a re-analysis of the Raman spectrum of BaMg(CO3)2

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Some Problems of the studies on the manganese minerals in Japan

Cited by 7 publications

References 0 publications

Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia

Sugilite in manganese silicate rocks from the Hoskins mine and Woods mine, New South Wales, Australia

Aluminosugilite, KNa&lt;sub&gt;2&lt;/sub&gt;Al&lt;sub&gt;2&lt;/sub&gt;Li&lt;sub&gt;3&lt;/sub&gt;Si&lt;sub&gt;12&lt;/sub&gt;O&lt;sub&gt;30&lt;/sub&gt;, an Al analogue of sugilite, from the Cerchiara mine, Liguria, Italy

Vibrational spectra of BaMn(CO3)2 and a re-analysis of the Raman spectrum of BaMg(CO3)2

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Aluminosugilite, KNa<sub>2</sub>Al<sub>2</sub>Li<sub>3</sub>Si<sub>12</sub>O<sub>30</sub>, an Al analogue of sugilite, from the Cerchiara mine, Liguria, Italy