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SI2O7 [5 records]

Record 1 2021-07-14

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Si2O7
formula, see observation
DEF

Any member of a group of compounds with structures that have two silicate tetrahedrons ... linked together.

OBS

Chemical formula: Si2O7

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Si2O7
formula, see observation
OBS

Ces silicates possèdent des groupes-unités faits de deux tétraèdres liés l'un à l'autre [...]

OBS

Formule chimique : Si2O7

Spanish

Save record 1

Record 2 2012-01-05

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
BaBe2(Si2O7)
formula, see observation
BaBe2Si2O7
formula, see observation
Be2Ba(Si2O7)
formula, see observation
DEF

A colorless barium and beryllium silicate.

CONT

At Mann No. 1, beryllium minerals include barylite and eudidymite ...

OBS

Etymology: from the Greek barus, meaning "heavy" and lithos, meaning "stone."

OBS

Chemical formulas: BaBe2(Si2O7) or BaBe2Si2O7 or Be2Ba(Si2O7)

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
BaBe2(Si2O7)
formula, see observation
BaBe2Si2O7
formula, see observation
Be2Ba(Si2O7)
formula, see observation
DEF

Minéral incolore du système cristallin orthorhombique, constitué de silicate de béryllium et de baryum naturel.

CONT

Dans l'indice de Mann nº 1, les minéraux béryllifères comprennent la barylite et l'eudidymite [...]

OBS

[La barilite] se présente en cristaux aplatis (Suède) et est associée à la franklinite et à la willémite à Franklin, New Jersey (États-Unis).

OBS

Formules chimiques : BaBe2(Si2O7) ou BaBe2Si2O7 ou Be2Ba(Si2O7)

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
BaBe2(Si2O7)
formula, see observation
BaBe2Si2O7
formula, see observation
Be2Ba(Si2O7)
formula, see observation
DEF

Silicato mixto de berilio y bario [...] cuyos cristales son incoloros.

OBS

Fórmulas químicas : Be2Ba(Si2O7) o BaBe2Si2O7 o Be2Ba(Si2O7)

Save record 2

Record 3 2011-06-17

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
MgCa2Si2O7
formula, see observation
Ca2MgSi2O7
formula, see observation
Ca2Mg(Si2O7)
formula, see observation
DEF

A tetragonal mineral of the melilite group consisting of a silicate of calcium and magnesium and isomorphous with gehlenite.

OBS

MgCa2Si2O7.

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
MgCa2Si2O7
formula, see observation
Ca2MgSi2O7
formula, see observation
Ca2Mg(Si2O7)
formula, see observation
DEF

Minéral du système quadratique constitué d'un silicate de calcium et de magnésium se présentant sous la forme de petits cristaux.

OBS

Ca2MgSi2O7.

Spanish

Save record 3

Record 4 2011-06-15

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Pb8Mn(Si2O7)3
formula, see observation
DEF

A white rhombohedral mineral tarnishing on exposure.

OBS

Chemical formula: Pb8Mn(Si2O7)3

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Pb8Mn(Si2O7)3
formula, see observation
DEF

Minéral du système rhomboédrique composé de silicate naturel de plomb dont la couleur blanche se ternit à l'air.

OBS

Formule chimique : Pb8Mn(Si2O7)3

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
Pb8Mn(Si2O7) 3
formula, see observation
DEF

Silicato de plomo [...] que cristaliza en el sistema romboédrico.

OBS

Fórmula química: Pb8Mn(Si2O7)3

Save record 4

Record 5 2011-04-21

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Ca2(Be,Al)(OH)Si2O7·H2O
formula, see observation
Ca2(Be,Al)Si2O7(OH)·H2O
formula, see observation
DEF

A tetragonal mineral [occurring] in colorless crystals.

OBS

Chemical formula: Ca2(Be,Al)Si2O7(OH)·H2O or Ca2(Be,Al)(OH)Si2O7·H2O

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Ca2(Be,Al)(OH)Si2O7·H2O
formula, see observation
Ca2(Be,Al)Si2O7(OH)·H2O
formula, see observation
DEF

Aluminosilicate naturel de béryllium et de calcium, du système cristallin quadratique et incolore.

OBS

Étymologie : d'après le minéralogiste suédois Gregori Aminoff.

OBS

Formule chimique : Ca2(Be,Al)(OH)Si2O7·H2O ou Ca2(Be,Al)Si2O7(OH)·H2O

Spanish

Save record 5

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