Cuprite - Revision history

Cornish semiconductor at 10:12, 1 July 2026

2026-07-01T10:12:34Z

← Older revision		Revision as of 10:12, 1 July 2026
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	* Cleavage:Imperfect/Fair Interrupted on {111}, more rarely on {001}.		* Cleavage:Imperfect/Fair Interrupted on {111}, more rarely on {001}.
	* Fracture:Conchoidal		* Fracture:Conchoidal

			[https://www.mindat.org Data from mindat.org]

	Cuprite is a red, semitransparent oxide of copper. Quite difficult to find well crystallised material, and not found on all old copper mines, it is fairly easy to spot as the red glints stand out among the greens and blues of the other secondary copper minerals. Its earthy form is more common, known as 'tile ore'. This variety makes the earth in some old copper mines a distinctly red colour in areas where it is abundant.		Cuprite is a red, semitransparent oxide of copper. Quite difficult to find well crystallised material, and not found on all old copper mines, it is fairly easy to spot as the red glints stand out among the greens and blues of the other secondary copper minerals. Its earthy form is more common, known as 'tile ore'. This variety makes the earth in some old copper mines a distinctly red colour in areas where it is abundant.

Cornish semiconductor at 09:17, 1 July 2026

2026-07-01T09:17:26Z

← Older revision		Revision as of 09:17, 1 July 2026
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	As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.		As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.

	Part of the [[ACE R&D project\|Arts Council England R&D project]] is to research new mine sites to try and locate more specimens of this mineral to use.		Part of the [[ACE R&D project\|Arts Council England R&D project]] is to research new mine sites to try and locate more specimens of this mineral to use, as I haven't been able to use it in any [[synths\|synthesiser circuits yet]].

	[[File:Testing-cuprite.jpg\|thumb\|right\|frame\|Curve testing a single crystal of cuprite]]		[[File:Testing-cuprite.jpg\|thumb\|right\|frame\|Curve testing a single crystal of cuprite]]

Cornish semiconductor at 09:16, 1 July 2026

2026-07-01T09:16:23Z

← Older revision		Revision as of 09:16, 1 July 2026
Line 15:		Line 15:
	As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.		As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.

	Part of the [[ACE R&D\|Arts Council England R&D project]] is to research new mine sites to try and locate more specimens of this mineral to use.		Part of the [[ACE R&D project\|Arts Council England R&D project]] is to research new mine sites to try and locate more specimens of this mineral to use.

	[[File:Testing-cuprite.jpg\|thumb\|right\|frame\|Curve testing a single crystal of cuprite]]		[[File:Testing-cuprite.jpg\|thumb\|right\|frame\|Curve testing a single crystal of cuprite]]

Cornish semiconductor at 09:15, 1 July 2026

2026-07-01T09:15:36Z

← Older revision		Revision as of 09:15, 1 July 2026
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	As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.		As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.

			Part of the [[ACE R&D\|Arts Council England R&D project]] is to research new mine sites to try and locate more specimens of this mineral to use.

			[[File:Testing-cuprite.jpg\|thumb\|right\|frame\|Curve testing a single crystal of cuprite]]

	===Pages mentioning cuprite===		===Pages mentioning cuprite===

	{{Special:WhatLinksHere/Cuprite}}		{{Special:WhatLinksHere/Cuprite}}

Cornish semiconductor at 09:04, 1 July 2026

2026-07-01T09:04:47Z

← Older revision		Revision as of 09:04, 1 July 2026
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	[[File:Cuprite.jpg\|thumb\|right\|frame\|Cuprite from Wheal Unity, Gwennap]]		[[File:Cuprite.jpg\|thumb\|right\|frame\|Cuprite from Wheal Unity, Gwennap. Coated in a thin layer of blue crysocolla.]]
	[[File:Wunitywood-cuprite.png\|right\|frame\|A curve trace of cuprite from Wheal Unity Wood]]		[[File:Wunitywood-cuprite.png\|right\|frame\|A curve trace of cuprite from Wheal Unity Wood]]

Cornish semiconductor: /* Pages mentioning cuprite */

2026-07-01T09:03:54Z

Pages mentioning cuprite

← Older revision		Revision as of 09:03, 1 July 2026
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	===Pages mentioning cuprite===		===Pages mentioning cuprite===

	{{Special:WhatLinksHere/~~Cupyrite~~}}		{{Special:WhatLinksHere/Cuprite}}

Cornish semiconductor: Created page with "Cuprite from Wheal Unity, Gwennap A curve trace of cuprite from Wheal Unity Wood * Lustre:Adamantine, Sub-Metallic, Earthy * Transparency:Transparent, Translucent * Colour:Dark red to cochineal red, sometimes almost black. * Streak:Shining metallic brownish-red. * Hardness:3½ - 4 on Mohs scale * Tenacity:Brittle * Cleavage:Imperfect/Fair Interrupted on {111}, more rarely on {001}. * Frac..."

2026-07-01T09:02:27Z

Created page with "thumb|right|frame|Cuprite from Wheal Unity, Gwennap right|frame|A curve trace of cuprite from Wheal Unity Wood * Lustre:Adamantine, Sub-Metallic, Earthy * Transparency:Transparent, Translucent * Colour:Dark red to cochineal red, sometimes almost black. * Streak:Shining metallic brownish-red. * Hardness:3½ - 4 on Mohs scale * Tenacity:Brittle * Cleavage:Imperfect/Fair Interrupted on {111}, more rarely on {001}. * Frac..."

New page

[[File:Cuprite.jpg|thumb|right|frame|Cuprite from Wheal Unity, Gwennap]]
[[File:Wunitywood-cuprite.png|right|frame|A curve trace of cuprite from Wheal Unity Wood]]

* Lustre:Adamantine, Sub-Metallic, Earthy
* Transparency:Transparent, Translucent
* Colour:Dark red to cochineal red, sometimes almost black.
* Streak:Shining metallic brownish-red.
* Hardness:3½ - 4 on Mohs scale
* Tenacity:Brittle
* Cleavage:Imperfect/Fair Interrupted on {111}, more rarely on {001}.
* Fracture:Conchoidal

Cuprite is a red, semitransparent oxide of copper. Quite difficult to find well crystallised material, and not found on all old copper mines, it is fairly easy to spot as the red glints stand out among the greens and blues of the other secondary copper minerals. Its earthy form is more common, known as 'tile ore'. This variety makes the earth in some old copper mines a distinctly red colour in areas where it is abundant.

As a semiconductor, the earthy form seems not useful or conductive at all. In it's well crystallised form it is extremely good, very eager and easy to find semiconducting junctions. The test here was done on a single crystal with one silver contact to provide the ohmic connection, and one steel to provide the point contact. Cuprite is the subject of ongoing semiconductor research, for use in solar panels.

===Pages mentioning cuprite===

{{Special:WhatLinksHere/Cupyrite}}