Difference between revisions of "Covellite"

Latest revision as of 13:38, 6 July 2022

Covellite

Description

Dark blue hexagonal crystals or black powder composed of Copper sulfide. Covellite was named for Niccolo Covelli after he discovered the mineral at Vesuvius in the early 19th century. Copper sulfide was probably used as a black pigment in antiquity (Orna et al 1980). It is currently used in antifouling paints and in textile dying with Aniline black.

Synonyms and Related Terms

copper sulfide; covelliet (Ned.)

Raman

Risks

Unstable in air.

Physical and Chemical Properties

Hexagonal crystals.
Cleavage is perfect in one direction.
Fracture = uneven.
Luster = submetallic.
Streak = gray to black

Composition	CuS
Mohs Hardness	1.5 - 2.0
Density	4.6-4.8 g/ml

Resources and Citations

M.V.Orna, M.J.D.Low, N.S.Baer, "Synthetic Blue Pigments: Ninth to Sixteenth Centuries. I. Literature" Studies in Conservation, 25:53-63, 1980.

Mineralogy Database: Covellite

C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979

Wikipedia: http://en.wikipedia.org/wiki/Covellite (Accessed Sept. 7, 2005)

@@ Line 2: / Line 2: @@
 == Description ==
-Dark blue hexagonal crystals or black powder composed of [http://cameo.mfa.org/materials/fullrecord.asp?name=copper sulfide copper sulfide]. Covellite was named for Niccolo Covelli after he discovered the mineral at Vesuvius in the early 19th century. Copper sulfide was probably used as a black pigment in antiquity (Orna et al 1980). It is currently used in antifouling paints and in textile dying with [http://cameo.mfa.org/materials/fullrecord.asp?name=aniline black aniline black].
+Dark blue hexagonal crystals or black powder composed of [[copper sulfide]]. Covellite was named for Niccolo Covelli after he discovered the mineral at Vesuvius in the early 19th century. Copper sulfide was probably used as a black pigment in antiquity (Orna et al 1980). It is currently used in antifouling paints and in textile dying with [[aniline black]].
 == Synonyms and Related Terms ==
 copper sulfide; covelliet (Ned.)
+[[[SliderGallery rightalign|covelliteRS.jpg~Raman]]]
-[[[SliderGallery rightalign|covelliteRS.jpg~Raman]]]
+== Risks ==
+* Unstable in air.
-== Other Properties ==
+==Physical and Chemical Properties==
-Hexagonal crystals.  Cleavage is perfect in one direction.  Fracture = uneven.  Luster = submetallic.  Streak = gray to black
+* Hexagonal crystals.
+* Cleavage is perfect in one direction.
+* Fracture = uneven.
+* Luster = submetallic.
+* Streak = gray to black
 {| class="wikitable"
@@ Line 23: / Line 30: @@
 |-
 ! scope="row"| Density
-| 4.6-4.8
+| 4.6-4.8 g/ml
 |}
-== Hazards and Safety ==
+==Resources and Citations==
-Unstable in air.
-== Additional Information ==
-M.V.Orna, M.J.D.Low, N.S.Baer, "Synthetic Blue Pigments: Ninth to Sixteenth Centuries. I. Literature" ''Studies in Conservation'', 25:53-63, 1980. Mineralogy Database: [http://www.webmineral.com/data/Covellite.shtml Covellite]
+* M.V.Orna, M.J.D.Low, N.S.Baer, "Synthetic Blue Pigments: Ninth to Sixteenth Centuries. I. Literature" ''Studies in Conservation'', 25:53-63, 1980.
-== Authority ==
+* Mineralogy Database: [http://www.webmineral.com/data/Covellite.shtml Covellite]
-* C.W.Chesterman, K.E.Lowe, C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
+* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
-* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Covellite (Accessed Sept. 7, 2005)
+* Wikipedia: http://en.wikipedia.org/wiki/Covellite (Accessed Sept. 7, 2005)
 [[Category:Materials database]]