Alum-(K)
Alum-(K) is a hydrous potassium aluminium sulfate mineral with formula KAl(SO4)2·12(H2O). It is the mineral form of potassium alum and is referred to as potassium alum in older sources. It is a member of the alum group. It occurs as colorless to white, soft isometric crystals and efflorescence coatings. Rare crystals are octahedral in form if occurring as precipitates from neutral water solution, but cubic in form if the solution is alkaline. Occurrences include Mount Vesuvius, Italy and Alum Cave, Sevier County, Tennessee.
primaryTopic
Alum-(K)
Alum-(K) is a hydrous potassium aluminium sulfate mineral with formula KAl(SO4)2·12(H2O). It is the mineral form of potassium alum and is referred to as potassium alum in older sources. It is a member of the alum group. It occurs as colorless to white, soft isometric crystals and efflorescence coatings. Rare crystals are octahedral in form if occurring as precipitates from neutral water solution, but cubic in form if the solution is alkaline. Occurrences include Mount Vesuvius, Italy and Alum Cave, Sevier County, Tennessee.
has abstract
Alum-(K) is a hydrous potassiu ...... ave, Sevier County, Tennessee.
@en
Ałun potasowy (ałun, ałun glin ...... ępuje naturalnie jako minerał.
@pl
Il potassio-allume è un minera ...... tenente al gruppo dell'allume.
@it
Wikipage page ID
31,264,647
Wikipage revision ID
737,826,246
Caption
Octahedral crystal of potassium alum
category
cleavage
On {111} indistinct
color
Colorless, white
diaphaneity
formula
fracture
gravity
habit
Stalactitic, columnar, granula ...... e as small octahedral crystals
luster
opticalprop
refractive
solubility
symmetry
system
twinning
unit cell
a = 12.133 Å; Z = 4
hypernym
comment
Alum-(K) is a hydrous potassiu ...... ave, Sevier County, Tennessee.
@en
Ałun potasowy (ałun, ałun glin ...... ępuje naturalnie jako minerał.
@pl
Il potassio-allume è un minera ...... tenente al gruppo dell'allume.
@it
label
Alum-(K)
@en
Alum-(K)
@it
Ałun potasowy
@pl
wasDerivedFrom
isPrimaryTopicOf
name
Alum-(K)
@en