8 - Artinite and Chrysotile

ID	8
Mineral	Artinite Chrysotile
Location	San Benito County - United States of America
Fluorescence	LW-UV: close SW-UV: close
Mindat.org	View Artinite information at mindat.org View Chrysotile information at mindat.org

ID	377
Long ID	1:1:377:5
Formula	`Mg₂(CO₃)(OH)₂ · 3H₂O`
IMA Status	0 1
General Appearance	Acicular crystals forming cross-fiber veinlets, botyroidal crusts, and spherical or bow tie aggregates of divergent crystals.
Occurrence	A low-temperature mineral in weathered or altered ultramafic rocks, typically serpentinites.
Other Occurrences	Low-temperature hydrothermal environments as veinlets or crusts along fracture surfaces in serpentinized ultrabasic rocks.
Industrial	None.
Discovery Year	1902
Diapheny	Transparent
Cleavage	On {100} perfect; on {001} good.
Tenacity	brittle
Colour	White; colourless in transmitted light
Hardness (min)	2.5
Hardness (max)	2.5
Lustre	Vitreous, Silky
About the name	Named in 1902 by S.C. Luigi Brugnatelli in honor of Ettore Artini (Milan, Italy, 29 August 1866 - Milan, Italy, 7 March 1928), Professor of Mineralogy, University of Milan.
Streak	White
Crystal System	Monoclinic
Cleavage Type	Perfect
Morphology	Forms crusts of acicular crystals, elongated [010]. Also botryoidal masses of silky fibers; spherical aggregates of radiating fibers; cross-fiber veinlets.
Comment Luster	Fibrous aggregates silky.
Publication Year	1902
shortcode_ima	Art

ID	975
Long ID	1:1:975:1
Formula	`Mg₃Si₂O₅(OH)₄`
IMA Status	0 1
Hardness (min)	2.5
Hardness (max)	2.5
Lustre	Silky
About the name	Named in 1843 by Franz von Kobell from the Greek chrysos - "gold" and tilos - "fiber."
Crystal System	Monoclinic
Morphology	Fibrous, massive
shortcode_ima	Ctl

Artinite and Chrysotile