Alstonite
Alstonite, also known as bromlite, is a low temperature hydrothermal mineral that is a rare double carbonate of calcium and barium with the formula BaCa(CO3)2, sometimes with some strontium. Barytocalcite and have the same formula but different structures, so these three minerals are said to be trimorphous. Alstonite is triclinic but barytocalcite is monoclinic and paralstonite is trigonal. The species was named Bromlite by Thomas Thomson in 1837 after the Bromley-Hill mine, and alstonite by August Breithaupt of the Freiberg Mining Academy in 1841, after Alston, Cumbria, the base of operations of the mineral dealer from whom the first samples were obtained by Thomson in 1834. Both of these names have been in common use.
Wikipage redirect
primaryTopic
Alstonite
Alstonite, also known as bromlite, is a low temperature hydrothermal mineral that is a rare double carbonate of calcium and barium with the formula BaCa(CO3)2, sometimes with some strontium. Barytocalcite and have the same formula but different structures, so these three minerals are said to be trimorphous. Alstonite is triclinic but barytocalcite is monoclinic and paralstonite is trigonal. The species was named Bromlite by Thomas Thomson in 1837 after the Bromley-Hill mine, and alstonite by August Breithaupt of the Freiberg Mining Academy in 1841, after Alston, Cumbria, the base of operations of the mineral dealer from whom the first samples were obtained by Thomson in 1834. Both of these names have been in common use.
has abstract
Alstonit ist ein selten vorkom ...... mit dem Taschenmesser ritzen.
@de
Alstonita mineral bat da.
@eu
Alstonite, also known as broml ...... names have been in common use.
@en
L'alstonite è un minerale.
@it
La alstonita es un mineral de ...... ónimos poco usado es bromlita.
@es
La alstonita és un mineral de ...... calitat d'Alston (Anglaterra).
@ca
Альстони́т — минерал, безводный двойной карбонат бария и кальция.
@ru
Альстоніт (рос. альстонит; анг ...... онат кальцію острівної будови.
@uk
Wikipage page ID
page length (characters) of wiki page
Wikipage revision ID
987,423,529
Link from a Wikipage to another Wikipage
2V
Measured 6°, calculated 8°
@en
alteration
Colour may fade on exposure to light
@en
birefringence
δ = 0.146
@en
category
cleavage
Imperfect on pseudo-orthorhombic {110}
@en
colour
Colourless to snow-white; also pale gray, pale cream, pink to pale rose-red
@en
dana
diaphaneity
Transparent to translucent
@en
dispersion
Weak, r > v
@en
fluorescence
Weak yellow under LW and SW
@en
formula
BaCa2
@en
fracture
Uneven
@en
gravity
habit
Steep pseudohexagonal dipyramids, pseudo-orthorhombic
@en
imagesize
lustre
Vitreous
@en
molweight
name
Alstonite
@en
opticalprop
Biaxial
@en
Other
Not radioactive
@en
pleochroism
None
@en
refractive
nα = 1.526 nβ = 1.671 nγ = 1.672
@en
solubility
Soluble in dilute HCl
@en
streak
White
@en
system
Unknown space group
@en
twinning
Common on pseudo-orthorhombic {10} and {310}
@en
unit cell
a = 17.38, b = 14.40
@en
c = 6.123 [Å]; α = 90.35°
@en
β = 90.12°, γ = 120.08°; Z = 24
@en
wikiPageUsesTemplate
hypernym
comment
Alstonit ist ein selten vorkom ...... mit dem Taschenmesser ritzen.
@de
Alstonita mineral bat da.
@eu
Alstonite, also known as broml ...... names have been in common use.
@en
L'alstonite è un minerale.
@it
La alstonita es un mineral de ...... ónimos poco usado es bromlita.
@es
La alstonita és un mineral de ...... calitat d'Alston (Anglaterra).
@ca
Альстони́т — минерал, безводный двойной карбонат бария и кальция.
@ru
Альстоніт (рос. альстонит; анг ...... онат кальцію острівної будови.
@uk
label
Alstonit
@de
Alstonita
@ca
Alstonita
@es
Alstonita
@eu
Alstonite
@en
Alstonite
@it
Альстонит
@ru
Альстоніт
@uk
wasDerivedFrom
isPrimaryTopicOf
name
Alstonite
@en