Schorl Tourmaline

NaFe2+3Al6(BO3)3Si6O18(OH)4 - Mohs Hardness: 6-6 1/2. Schorl is best known as "Black Tourmaline". Although other forms of Tourmaline may be black, Schorl is exclusively black and, unlike other Tourmaline forms, is never transparent or even translucent. Schorl is the most common form of Tourmaline. It may be highly lustrous and form in beautiful crystals, and is one of the most aesthetic black minerals known. It may form in tiny dense needles within a Quartz crystal where it is known as Tourmalinated Quartz.
Abstract/Description: NaFe2+3Al6(BO3)3Si6O18(OH)4 - Mohs Hardness: 6-6 1/2. Schorl is best known as "Black Tourmaline". Although other forms of Tourmaline may be black, Schorl is exclusively black and, unlike other Tourmaline forms, is never transparent or even translucent. Schorl is the most common form of Tourmaline. It may be highly lustrous and form in beautiful crystals, and is one of the most aesthetic black minerals known. It may form in tiny dense needles within a Quartz crystal where it is known as Tourmalinated Quartz.
Subject(s): Namibia, Africa
environmental sciences
Title: Schorl Tourmaline.
Type of Resource: still image
Genre: natural object
Physical Form: image/jpeg
Abstract/Description: NaFe2+3Al6(BO3)3Si6O18(OH)4 - Mohs Hardness: 6-6 1/2. Schorl is best known as "Black Tourmaline". Although other forms of Tourmaline may be black, Schorl is exclusively black and, unlike other Tourmaline forms, is never transparent or even translucent. Schorl is the most common form of Tourmaline. It may be highly lustrous and form in beautiful crystals, and is one of the most aesthetic black minerals known. It may form in tiny dense needles within a Quartz crystal where it is known as Tourmalinated Quartz.
Identifier(s): rockminx-6-1-2 (IID)
Subject(s): Namibia, Africa
environmental sciences
Held by: The University of Toledo
Location: Digital Initiatives, University of Toledo Libraries
Rights Statement: NO COPYRIGHT - UNITED STATES
Related Title: Ruth Jacobs Collection.
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