Minerals | By_Name | By_Class | Sulfates | CYANOTRICHITE

CYANOTRICHITE Specimens



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# CYA-9, $30.00 Sold!
Dims: 2.3 x 1.8 x 1.0" (5.7 x 1.8 x 1.0 cm) .... Wt: 1.4 oz. (40 g) .... Loc: Grandview Mine, Coconino County, Arizona, U.S.A.
This hand specimen consists of a pale host rock through which extends both fibrous and massive Cyanotrichite. The fibrous material shows considerable crushing damage, and crystals are too small (length: 1-2 mm) and fine to effectively study with a loupe. The massive material shows no crystal form and has a dull luster, as opposed to the silky luster of the fibrous material. Both have the pale blue color that is common for Cyanotrichite. A vein of crystalline and massive brochantite and/or possibly malachite also extends through the host rock.
# CYA-8, $80.00 Sold!
Dims: 2.5 x 1.8 x 1.7" (6.3 x 4.5 x 4.2 cm) .... Wt: 2.5 oz. (72 g) .... Loc: Grandview Mine, Coconino County, Arizona, U.S.A.
Both massive crusts and fibrous mattes of Cyanotrichite are present on this small cabinet specimen. The mattes are the most obvious, covering a portion of the surface of the specimen, and are in moderately good condition, showing considerable crushing damage. The crystals therein measure up to 0.1" (3 mm) in length and perhaps more, but are far too fine for effective study without a powerful microscope. The massive crust shows no crystal form, of course. Both have the sky blue color that is standard for the specie and the matte and crust have respective silky and dull lusters. The Cyanotrichite is accompanied by crusts and druses of brochantite, and perhaps some malachite.
# CYA-6, $150.00 Sold!
Dims: 4.2 x 2.4 x 2.4" (10.7 x 6.2 x 6.1 cm) .... Wt: 7.8 oz. (221 g) .... Loc: Maid-of-Sunshine Mine, Arizona, U.S.A.
A mat of intergrown Cyanotrichite needles partly coats the brown base rock of this cabinet specimen. This mat is in moderately good condition, showing visible crushing damage in a few places, and is made up of perhaps thousands of needles that do not exceed 1 or 2 mm in length- they are certainly too small and fine to study with a loupe. All have a pale blue color, and the matte has a silky luster in places. A few other secondary copper minerals also rest on the base rock.
# CYA-7, $113.00 Sold!
Dims: 3.7 x 2.7 x 1.3" (9.4 x 6.8 x 3.2 cm) .... Wt: 4.6 oz. (131 g) .... Loc: Maid-of-Sunshine Mine, Arizona, U.S.A.
A matte of countless tiny, fibrous Cyanotrichite needles rests on the rusty-brown base of this cabinet specimen. These needles do not exceed 2 mm in length and are too small and fine to examine effectively even with a loupe. Almost all of them have been matted down or crushed, and a powerful microscope is needed to study their orthorhombic form. Their color is sky-blue and their luster appears to be pearly, though the entire matte has a dull, silky luster. They are likely at least translucent. They rest on a bed of what I have been told is allophane, an apparently amorphous, hydrous aluminum silicate- it does appear, however, to show some nodular, almost botryoidal form, and has a pale, dull, blue-gray color and dull luster. A small amount of brochantite also appears to be present.
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Minerals | By_Name | By_Class | Sulfates | CYANOTRICHITE

 

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