Plagioclase
Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series (from the Ancient Greek for "oblique fracture", in reference to its two cleavage angles). This was first shown by the German mineralogist Johann Friedrich Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8), where sodium and calcium atoms can substitute for each other in the mineral's crystal lattice structure. Plagioclase in hand samples is often identified by its polysynthetic crystal twinning or 'record-groove'
category
composition
primaryTopic
Plagioclase
Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series (from the Ancient Greek for "oblique fracture", in reference to its two cleavage angles). This was first shown by the German mineralogist Johann Friedrich Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8), where sodium and calcium atoms can substitute for each other in the mineral's crystal lattice structure. Plagioclase in hand samples is often identified by its polysynthetic crystal twinning or 'record-groove'
has abstract
25بك المحتوى هنا ينقصه الاستشه ...... حاجة للتوسيع. شارك في تحريرها.
@ar
De mineralen-reeks plagioklaas ...... en zogenaamde vaste oplossing.
@nl
Il plagioclasio è uno dei feld ...... a tipica a doppio collo d'oca.
@it
Les plagioclases sont des min ...... de, la série albite-anorthite.
@fr
Plagioclasa (mejor dicho plagi ...... o y 20.1% de óxido de calcio).
@es
Plagioclase is a series of tec ...... mineral in the crust of Mars.
@en
Plagioclase ou plagioclásio é ...... ite presente (%Ab) na amostra.
@pt
Plagioklazy jest to szereg min ...... ni (skalenie sodowo-wapniowe).
@pl
Плагиокла́зы (от др.-греч. πλά ...... едними и № 50-100 — основными.
@ru
斜長石（しゃちょうせき、Plagioclase）はケイ酸塩鉱 ...... 長を調べるために使われる。斜長石はまた月の石の主成分である。
@ja
thumbnail
Wikipage page ID
Wikipage revision ID
744,717,659
Caption
A photomicrograph of a plagioc ...... called polysynthetic twinning.
category
Feldspar mineral group, tectosilicate
class
cleavage
Good on {001} and {010}
color
White, gray, bluish white, reddish white, greenish white
diaphaneity
Transparent to translucent
formula
NaAlSi3O8 – CaAl2Si2O8
gravity
habit
Massive to granular
luster
opticalprop
Biaxial albite, biaxial anorthite
refractive
Albite: nα 1.527, nβ 1.532 nγ 1.538
Anorthite: nα 1.577 nβ 1.585 nγ 1.590
solubility
Albite insoluble in HCl, anorthite decomposed by HCl
system
tenacity
twinning
Common, albite law striations on {001}
hypernym
comment
25بك المحتوى هنا ينقصه الاستشه ...... البعض في البنية البللورية له.
@ar
De mineralen-reeks plagioklaas ...... en zogenaamde vaste oplossing.
@nl
Il plagioclasio è uno dei feld ...... agioclasio calcico CaAl2Si2O8.
@it
Les plagioclases sont des min ...... de, la série albite-anorthite.
@fr
Plagioclasa (mejor dicho plagi ...... ος: oblicuo, y κλάσις: rotura.
@es
Plagioclase is a series of tec ...... al twinning or 'record-groove'
@en
Plagioclase ou plagioclásio é ...... utura cristalina dos minerais.
@pt
Plagioklazy jest to szereg min ...... ni (skalenie sodowo-wapniowe).
@pl
Плагиокла́зы (от др.-греч. πλά ...... ставляет изоморфную смесь, сод
@ru
斜長石（しゃちょうせき、Plagioclase）はケイ酸塩鉱 ...... 長を調べるために使われる。斜長石はまた月の石の主成分である。
@ja
label
Plagioclasa
@es
Plagioclase
@en
Plagioclase
@fr
Plagioclase
@pt
Plagioclasio
@it
Plagioklaas
@nl
Plagioklazy
@pl
Плагиоклаз
@ru
بلاغيوكلاس
@ar
斜長石
@ja
sameAs
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depiction
isPrimaryTopicOf
name
Plagioclase
@en