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Mineral Specimens
Page 3
Clinohumite mineral specimens from Afghanistan
Chondrodite is not a rare mineral but it is uncommon in fine crystals. The
chondrodite crystals from Tilly Foster Mine in New York State are classics.
These fine crystals from Afghanistan are very collectible examples of a
mineral not often available in such quality.
Note: This occurence has been subsequently identified as clinohumite. Both
clinohumite and chondrodite are monoclinic members of the humite group.
Humite group minerals consist of alternating silicate and oxide layers, with
the silicate layers having an olivine structure and the oxide layers having
a brucite structure. Chondrodite, magnesium iron silicate fluoride hydroxide,
has two stacked olivine layers between each brucite layer, while clinohumite,
magnesium silicate fluoride hydroxide, has four stacked olivine layers between
each brucite layer. Both are very similar materials indicative of metamorphic
environments.
TC602
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$300.00
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Reddish brown, gemmy chondrodite crystal cluster. The largest crystal is 1.5 cm long. Minor
contact at the base of the cluster
Specimen size - approx 2.2 cm. X 1.2 cm. X 1.1 cm.
TC603
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$400.00
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Reddish brown, loose gem chondrodite crystal, 1.2 X .8 X .7 cm, on minor matrix. You could cut this one.
Specimen size - approx 1.5 cm. X .8 cm. X .7 cm.
TC604
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$300.00
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Reddish brown, gemmy chondrodite crystals up to 1.7 cm long. Contacted on rear of specimen.
Specimen size - approx 2.1 cm. X 1.5 cm. X 1.1 cm.
TC605
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$350.00
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Reddish brown, gemmy chondrodite crystal cluster. The large crystal is 1.5 cm long
Specimen size - approx 2.5 cm. X 1.5 cm. X 1.5 cm.
TC606
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$175.00
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Loose, reddish brown, gem chondrodite crystal contacted at base.
Specimen size - approx 1 cm. X .8 cm. X .5 cm.
TC607
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$100.00
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Reddish brown chondrodite crystal in massive chondrodite. Chip in termination.
Specimen size - approx 2.5 cm. X 1.5 cm. X 1.4 cm.
TC608
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$450.00
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Reddish brown, gem chondrodite crystals up to 1.7 cm long.
You could cut this one.
Specimen size - approx 1.7 cm. X 1 cm. X .9 cm.
TC609
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$300.00
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Reddish brown, gemmy chondrodite crystal cluster on minor matrix.
The large crystal is 1.7 cm long.
Specimen size - approx 1.8 cm. X 1 cm. X .8 cm.
TC610
CLINOHUMITE
Ladjuar Madan, Kokcha Valley,
Afghanistan
$275.00
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Reddish brown, gemmy chondrodite crystal cluster with crystals up to 1.5 cm long.
Specimen size - approx 2.7 cm. X 1.8 cm. X 1.1 cm.
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