Gem News International: Yellow-green clinohumite
and yellow chondrodite from Tanzania.
Clinohumite is an uncommon member of the humite group, a magnesium silicate with the chemical formula (Mg,Fe)9(SiO4)4(F,OH)2, which is essentially a hydrated olivine.
Reaction textures in a suite of clinohumite - forsterite bearing marbles from parts of the Grenvillian South Delhi Fold Belt, India: Evidence of Ti mobility during regional metamorphism.
Crystal chemistry of titanian chondrodite and titanian clinohumite of high pressure origin.
Titanian clinohumite in the carbonatites of the Jacupiranga Complex, Brazil: Mineral chemistry and comparison with titanian clinohumite from other environments.
Petrology of titanian clinohumite and olivine at the high-pressure breakdown of antigorite serpentinite to chlorite harzburgite (Almirez Massif, Spain).
Fluorine-rich clinohumite from Ambasamudram marbles, Southern India: mineralogical and preliminary FTIR spectroscopic characterization.
Most of the single crystals and twins are loose, but some rest in white marble matrix with phlogopite and microcrystals of clinohumite.
The Afghan clinohumite crystals are lenticular and face-rich, reach 2.
Next, there is an intriguing new discovery of spinel and clinohumite
crystals embedded in a "dirty" white marble from a contact-metamorphic deposit near Morogoro, Tanzania, these specimens having been brought to the new Executive Inn show by Jochen Hintze of M.
In addition to the W and Mo ore minerals scheelite (occurring in white, gray, black, and yellow crystals) and molybdenite, the skarns also host a number of interesting accessory minerals including: allanite, anhydrite, chalcocite, chalcopyrite, clinohumite
, covellite, ilmenite, bismuthmite, marcasite, pyrite, pyrrhotite and scapolite.
At Monte Somma/Vesuvius, they are found in beautiful, complex crystals, as witness the transparent, orange clinohumite
crystal shown in Figure 10.