Clinochlore

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Seraphinite
Russia
4.81 carats
© gemselect.com

Clinochlore is named from Greek "klinein" - to incline, plus "klan" - to break, referring to its oblique basal cleavage.

Clinochlore forms green, yellowish, red, rose-red tabular or prismatic crystals. May also be massive, radiating, and globular masses of dense flakes.

Clinochlore yields attractive cabochons.

Clinochlore Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 

Clinochlore Gemstones by Size

This table shows distribution of Clinochlore gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:1.92 cts
Heaviest:59.99 cts
Average:17.10 cts
Total photos:19
Do you have a larger Clinochlore? Why not upload a photo?
1.92ct to 7.73ct7.73ct to 13.53ct13.53ct to 19.34ct19.34ct to 25.15ct25.15ct to 30.96ct30.96ct to 36.76ct36.76ct to 42.57ct42.57ct to 48.38ct48.38ct to 54.18ct54.18ct to 59.99ct
General Information
Varieties/Types:
Kämmererite - Chromium-bearing variety of Clinochlore with a pink to deep crimson-red colour.
Seraphinite - A green to grey massive Clinochlore, appears somewhat feathery in structure.
Chemical Formula
(Mg,Fe
2+
 
)
 
5
Al(Si
 
3
Al)O
 
10
(OH)
 
8
Anthony et al, Handbook of mineralogy (2001)
Photos of natural/un-cut material from mindat.org
Physical Properties of Clinochlore
Mohs Hardness2 to 2.5
Anthony et al, Handbook of mineralogy (2001)
Specific Gravity2.60 to 3.02
Anthony et al, Handbook of mineralogy (2001)
TenacityFlexible
Anthony et al, Handbook of mineralogy (2001) Laminae, inelastic.
Cleavage QualityPerfect
Anthony et al, Handbook of mineralogy (2001)
Optical Properties of Clinochlore
Refractive Index1.571 to 1.597
Anthony et al, Handbook of mineralogy (2001)
Optical CharacterBiaxial/+,-
Anthony et al, Handbook of mineralogy (2001)
PleochroismDistinct: light yellow-green to light blue-green - light greenish yellow to light blue-green.
Anthony et al, Handbook of mineralogy (2001)
Colour
Colour (General)Grass-green, olive-green, yellowish, white; pink, rose-red; colorless to pale green or yellow in thin section.
Anthony et al, Handbook of mineralogy (2001)
TransparencyTransparent,Translucent
Anthony et al, Handbook of mineralogy (2001)
LustrePearly,Greasy,Dull (Earthy)
Anthony et al, Handbook of mineralogy (2001)
Crystallography of Clinochlore
Crystal SystemMonoclinic
Anthony et al, Handbook of mineralogy (2001)
HabitIn thin to thick pseudohexagonal crystals, with tapering pyramidal faces, to 10 cm. Commonly foliated, fibrous, granular, earthy, massive.
Anthony et al, Handbook of mineralogy (2001)
Geological Environment
Where found:A hydrothermal alteration product of amphiboles, pyroxenes, biotite. In chlorite schists, serpentinites, marbles, calc-silicate rocks, amphibolites, less commonly in ultramafic rocks. In ore veins; a detrital component of sediments.
Anthony et al, Handbook of mineralogy (2001)
Further Information
Mineral information:Clinochlore information at mindat.org
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