Mineral description : Chabazite

Mineral class Silicates : Tekto silicates : Zeolites

Chemical formula CaAl₂Si₄O₁₂^.6H₂O

Crystal system Triclinic, pseudohexagonal.

Habitus Crystals almost cubic, pseudorombohedral in shape. Commonly with penetration twinning. Massive or granular forms.

Cleavage Distinct cleavage, fracture uneven, brittle.

Hardness 4 - 5

Density 2.05 - 2.20

Color Usually white but yellow, pink, red and colorless also common. Transparent to translucent.

Streak White

Luster Vitreous.

Description A common zeolite with a lot of localities with nice crystals.

Occurance Formed in volcanic rocks, basalts and andesites. Also in ore veins as hydrothermal formations. Rarely in schist and dolomites.

Associates Other zeolites, nepheline, pyroxenes, amphiboles, epidote, calcite.

Notes Named after the ancient Greek word for stone, chabazios.

Localities A mineral with several good localities in Scandinavia.
Sweden :

Svappavaara, Lappland. As nice colorless to red almost cubic crystals in cavities in the rocks.
Fridhem mine, Gällivare. Together with stilbite in drusy quartz.
Malmberget. Together with scapolite in druses.
Långban, Värmland. In druses with scapolite and stilbite.

Norway :

Langselv mine, near Arendal. In druses in ore and scarn.
Årvoll, Oslo. In miarolitic cavities in nordmarkite.

Finland : (Sorry if the names are messed up, but I don't speak Finnish)

Laurinoja, Kolari. In drusy parts of the iron mine as beige cubic crystals up to 1 cm. Some fluorescent green in UV light.

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Last changed : 2004-01-27

Mineral class	Silicates : Tekto silicates : Zeolites
Chemical formula	CaAl₂Si₄O₁₂^.6H₂O
Crystal system	Triclinic, pseudohexagonal.
Habitus	Crystals almost cubic, pseudorombohedral in shape. Commonly with penetration twinning. Massive or granular forms.
Cleavage	Distinct cleavage, fracture uneven, brittle.
Hardness	4 - 5
Density	2.05 - 2.20
Color	Usually white but yellow, pink, red and colorless also common. Transparent to translucent.
Streak	White
Luster	Vitreous.
Description	A common zeolite with a lot of localities with nice crystals.
Occurance	Formed in volcanic rocks, basalts and andesites. Also in ore veins as hydrothermal formations. Rarely in schist and dolomites.
Associates	Other zeolites, nepheline, pyroxenes, amphiboles, epidote, calcite.
Notes	Named after the ancient Greek word for stone, chabazios.
Localities	A mineral with several good localities in Scandinavia. Sweden : Svappavaara, Lappland. As nice colorless to red almost cubic crystals in cavities in the rocks. Fridhem mine, Gällivare. Together with stilbite in drusy quartz. Malmberget. Together with scapolite in druses. Långban, Värmland. In druses with scapolite and stilbite. Norway : Langselv mine, near Arendal. In druses in ore and scarn. Årvoll, Oslo. In miarolitic cavities in nordmarkite. Finland : (Sorry if the names are messed up, but I don't speak Finnish) Laurinoja, Kolari. In drusy parts of the iron mine as beige cubic crystals up to 1 cm. Some fluorescent green in UV light.