Images
Formula: ☐Mn2+2Mg5Si8O22(OH)2
Inosilicate (chain silicate),
suenoite root name group,
manganese-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.175 calculated
Colour: Pale yellow, honey-yellow, yellow-brown to light brown, white (thin fibres)
Luminescence: Apparently bright pink under short wave UV (Mindat), but (MM 82.189-198) reports no
fluorescence under UV
Environments
clino-suenoite is a relatively recently defined mineral, approved in 2016.
Localities
At the type locality, the Lower Scerscen Glacier, Scerscen Valley, Lanzada, Sondrio Province, Lombardy,
Italy, clino-suenoite is an amphibole of the
suenoite root name group. The type specimen was
found in
manganese-rich
quartzite
erratics containing braunite,
rhodonite,
pyroxmangite,
rhodochrosite,
manganese-bearing
calcite, kutnohorite,
pyrophanite,
tiragalloite,
magnesio-riebeckite,
manganberzeliite,
aegirine–augite,
tephroite, albite,
manganese-rich
muscovite,
hausmannite,
bixbyite, friedelite,
hematite, clinochlore,
romanèchite,
ranciéite,
manganese-bearing
tremolite, jacobsite,
anatase and
johannsenite.
The geological setting of the orebody is dated mid to late Jurassic (174.1 to 145.0 million years ago).
The mineralisation formed in shallow sediments which were converted into
quartzites by Alpine metamorphism.
Clino-suenoite occurs as fibrous aggregates and as flattened elongated crystals, often in tufts up
to 2 cm long, included in rhodonite or in small carbonate
veins associated with tiragalloite and
pyrophanite
(MM 82.189-198).
Back to Minerals