Minerals | By_Name | By_Class | Silicates | KAOLINITE

KAOLINITE Specimens



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# KAO-4, $50.00 Sold!
Dims: 2.65x1.35x0.56in (6.73x3.42x1.42cm) .... Wt: 1.87oz (53.0g) .... Loc: Melbur China Clay Pit, Cornwall, England
This is a kaolinite crystal pseudomorph after orthoclase. It is a single, well-formed crystal with a scattered coating of muscovite crystals. All of the crystal faces are present, but all also have some level of damage, likely thanks to the distortions that sometimes occur as one mineral replaces another.
# KAO-3, $25.00 Sold!
Dims: 1.05x0.82x0.75" (2.66x2.08x1.91cm) .... Wt: 0.38oz (10.7g) .... Loc: Goodsprings, Clark County, Nevada, USA
These kaolinite crystals show excellent form of orthoclase crystals - they are pseudomorphs. Most of the white crystals are likely kaolinite, and they are embedded in a slightly darker mineral that is a light gray with just a hint of green, and no crystal indications. The surface of the kaolinite crystals have a rough texture, which I suspect is a distortion of the original orthoclase structure due to the incorporation of water into its composition.
# KAO-2, $25.00 Sold!
Dims: 1.10x1.02x0.90" (2.81x2.58x2.28cm) .... Wt: 0.51oz (14.5g) .... Loc: Goodsprings, Clark County, Nevada, USA
While this looks like a well formed crystal of orthoclase, it is not. It is a specimen of kaolinite as a pseudomorph after orthoclase. Actually, the base of the specimen has many more of these very white crystals in a greenish-white matrix that also includes bits of pyrite and quartz. It is easy to recognize the kaolinite crystals - they are whiter than anything else in the specimen.
# KAO-1, $25.00 Sold!
Dims: 1.1x1.0x0.6" (2.8x2.5x1.5cm) .... Wt: 0.4oz (12.6g) .... Loc: Hamilton, Steuben County, Indiana, USA
This is a small quartz geode containing a layer of pure white kaolinite coating the bottom half of the cavity. Under a loupe, the kaolinite looks much like snow on a landscape, and my 15x loupe does reveal individual crystals, but just barely. That makes these crystals rather huge by kaolinite standards, although I may be seeing books of even smaller crystals. The easily examined translucent crystals of this specimen are quartz, likely with kaolinite inclusions to lend a milky appearance.
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Minerals | By_Name | By_Class | Silicates | KAOLINITE

 

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