Prossima pubblicazione.
Referenza:
▪ Nishio-Hamane, D., Nagashima, M., Ogawa, N., Minakawa, T. (2018): Kannanite, a new mineral from Kannan Mountain, Japan. Journal of Mineralogical and Petrological Sciences, 113, (in press).
Abstract:
Kannanite, a new Ca–dominant member of the ardennite series, was obtained from Kannan Mountain, Ozu, Ehime Prefecture, Japan. Kannanite occurs in fine quartz veins crossing the hematite–rich regions of an iron–manganese ore included in the metachert. These veins are pale orange in color, while the kannanite itself is brownish–orange to orange, with a thin section exhibiting weak pleochroism. The mineral was found in grain sizes ranging from several to 15 µm and has a Mohs hardness of 6 and a calculated density of 3.43 g cm−3. The mean refractive index obtained from the Gladstone–Dale relationship for this mineral is 1.788. The empirical formula for kannanite is
(Ca3.60Mn2+0.40)Σ4(Al3.00Mn3+1.31Fe3+0.69Mg0.71Mn2+0.19Ni0.06Cu0.05)Σ6[(V5+0.70Si0.16As0.14)Σ1O3.84(OH)0.16](SiO4)2(Si3O10)(OH)6,
while the simplified formula is Ca4[(Al,Mn3+,Fe3+)5Mg] (VO4)(SiO4)2(Si3O10)(OH)6. Kannanite has an orthorhombic structure with a space group Pnmm and unit cell parameters a = 8.8802(14) Å, b = 5.9919(13) Å, c = 18.882(3) Å and V = 1004.7(3) Å3. Kannanite is considered to be formed by the activities of metamorphic fluid accompanied with the Sanbagawa metamorphism.
IMA 2015-100 = kannanite
- Marco E. Ciriotti
- Messaggi: 31675
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
IMA 2015-100 = kannanite
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
- Roberto Bracco
- Messaggi: 2437
- Iscritto il: lun 18 apr, 2005 10:42
- Località: Savona
Re: IMA 2015-100 = kannanite
Un altro minerale che da noi ci sta...
Roberto Bracco - AMI Liguria
Perché seguire il calcio, quando accanto c'è lo scandio e poco più in là il vanadio?
Perché seguire il calcio, quando accanto c'è lo scandio e poco più in là il vanadio?
- Marco E. Ciriotti
- Messaggi: 31675
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Re: IMA 2015-100 = kannanite
La struttura cristallina della nuova specie è irrisolta e pertanto quello che aggiungo potrebbe essere un pochino azzardato, ma la kannanite dovrebbe essere l'analogo di calcio della ardennite-(V).
ardennite group
Alpeite Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6
Ardennite-(As) Mn2+4Al2Al2(MgAl)(As5+O4)(SiO4)2(Si3O10)(OH)6
Ardennite-(V) Mn2+4Al2Al2(MgAl)(V5+O4)(SiO4)2(Si3O10)(OH)6
Kannanite Ca4Al2Al2(MgAl)(V5+O4)(SiO4)2(Si3O10)(OH)6
ardennite group
Alpeite Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6
Ardennite-(As) Mn2+4Al2Al2(MgAl)(As5+O4)(SiO4)2(Si3O10)(OH)6
Ardennite-(V) Mn2+4Al2Al2(MgAl)(V5+O4)(SiO4)2(Si3O10)(OH)6
Kannanite Ca4Al2Al2(MgAl)(V5+O4)(SiO4)2(Si3O10)(OH)6
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
- Marco E. Ciriotti
- Messaggi: 31675
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Re: IMA 2015-100 = kannanite
Pubblicazione effettuata.
Referenza:
▪ Nishio-Hamane, D., Nagashima, M., Ogawa, N., Minakawa, T. (2018): Kannanite, a new mineral from Kannan Mountain, Japan. Journal of Mineralogical and Petrological Sciences, 113, 245-250.
Abstract:
Kannanite, a new Ca–dominant member of the ardennite series, was obtained from Kannan Mountain, Ozu, Ehime Prefecture, Japan. Kannanite occurs in fine quartz veins crossing the hematite–rich regions of an iron–manganese ore included in the metachert. These veins are pale orange in color, while the kannanite itself is brownish–orange to orange, with a thin section exhibiting weak pleochroism. The mineral was found in grain sizes ranging from several to 15 µm and has a Mohs hardness of 6 and a calculated density of 3.43 g cm−3. The mean refractive index obtained from the Gladstone–Dale relationship for this mineral is 1.788. The empirical formula for kannanite is
(Ca3.60Mn2+0.40)Σ4(Al3.00Mn3+1.31Fe3+0.69Mg0.71Mn2+0.19Ni0.06Cu0.05)Σ6[(V5+0.70Si0.16As0.14)Σ1O3.84(OH)0.16](SiO4)2(Si3O10)(OH)6,
while the simplified formula is Ca4[(Al,Mn3+,Fe3+)5Mg](VO4)(SiO4)2(Si3O10)(OH)6. Kannanite has an orthorhombic structure with a space group Pnmm and unit cell parameters a = 8.8802(14) Å, b = 5.9919(13) Å, c = 18.882(3) Å and V = 1004.7(3) Å3. Kannanite is considered to be formed by the activities of metamorphic fluid accompanied with the Sanbagawa metamorphism.
NdR: nel lavoro nessun cenno all'alpeite, Ca4Mn3+2Al2(Mn3+Mg)(V5+O4)(SiO4)2(Si3O10)(OH)6, che ci certo ha affinità con questa nuova specie!
Referenza:
▪ Nishio-Hamane, D., Nagashima, M., Ogawa, N., Minakawa, T. (2018): Kannanite, a new mineral from Kannan Mountain, Japan. Journal of Mineralogical and Petrological Sciences, 113, 245-250.
Abstract:
Kannanite, a new Ca–dominant member of the ardennite series, was obtained from Kannan Mountain, Ozu, Ehime Prefecture, Japan. Kannanite occurs in fine quartz veins crossing the hematite–rich regions of an iron–manganese ore included in the metachert. These veins are pale orange in color, while the kannanite itself is brownish–orange to orange, with a thin section exhibiting weak pleochroism. The mineral was found in grain sizes ranging from several to 15 µm and has a Mohs hardness of 6 and a calculated density of 3.43 g cm−3. The mean refractive index obtained from the Gladstone–Dale relationship for this mineral is 1.788. The empirical formula for kannanite is
(Ca3.60Mn2+0.40)Σ4(Al3.00Mn3+1.31Fe3+0.69Mg0.71Mn2+0.19Ni0.06Cu0.05)Σ6[(V5+0.70Si0.16As0.14)Σ1O3.84(OH)0.16](SiO4)2(Si3O10)(OH)6,
while the simplified formula is Ca4[(Al,Mn3+,Fe3+)5Mg](VO4)(SiO4)2(Si3O10)(OH)6. Kannanite has an orthorhombic structure with a space group Pnmm and unit cell parameters a = 8.8802(14) Å, b = 5.9919(13) Å, c = 18.882(3) Å and V = 1004.7(3) Å3. Kannanite is considered to be formed by the activities of metamorphic fluid accompanied with the Sanbagawa metamorphism.
NdR: nel lavoro nessun cenno all'alpeite, Ca4Mn3+2Al2(Mn3+Mg)(V5+O4)(SiO4)2(Si3O10)(OH)6, che ci certo ha affinità con questa nuova specie!
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
Chi c’è in linea
Visitano il forum: Bing [Bot] e 59 ospiti