Hedenbergite - CaFe(Si2O6)

Hedenbergite, named in honor to M. L. Hedenberg a Swedish chemist, is a rock forming mineral in several metamorphic rocks, especially contact metamorphic rocks and skarns. It is also found in some igneous rocks and ore bodies. Crystals are stubby and prismatic, and usually have a rectangular cross section. It also occurs in grainy, columnar, acicular, massive, radiating, and fibrous crystals. Hedenbergite is a part of an important solid solution series of the pyroxene group. The series includes the minerals diopside, CaMgSi2O6, and augite, (Ca,Na)(Fe,Mg,Al)(Al,Si)2O6.



Optical properties:

• Color: Green
• Form: Stubby and prismatic crystals
• Interference colors: Moderate
• Relief: High

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Panoramic view of Hedenbergite Skarn thin section. Image by Andy Tindle (Virtual Microscope). PPL image, field of view = 2.5cm.




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Panoramic view of Hedenbergite Skarn thin section. Image by Andy Tindle (Virtual Microscope). XPL image, field of view = 2.5cm.




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Radial aggregate of hedenbergite crystals, Rio Marina, Elba, Italy. From RRUFF.




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Green orthorhombic prisms of hedenbergite crystals, Dal'Negorsk, Primorskiy Kray; far eastern, Russia. From RRUFF.




Bibliography



• Bucher, K., & Grapes, R. (2011). Petrogenesis of metamorphic rocks. Springer Science & Business Media.
• Fossen, H. (2016). Structural geology. Cambridge University Press.
• Howie, R. A., Zussman, J., & Deer, W. (1992). An introduction to the rock-forming minerals (p. 696). Longman.
• Passchier, Cees W., Trouw, Rudolph A. J: Microtectonics (2005).
• Philpotts, A., & Ague, J. (2009). Principles of igneous and metamorphic petrology. Cambridge University Press.
• Shelley, D. (1993). Igneous and metamorphic rocks under the microscope: classification, textures, microstructures and mineral preferred-orientations.
• Vernon, R. H. & Clarke, G. L. (2008): Principles of Metamorphic Petrology. Cambridge University Press.
• Vernon, R. H. (2018). A practical guide to rock microstructure. Cambridge university press.


Photo
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarncampigliahedembergite(4).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 skarncampigliahedembergite(5).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
skarncampigliahedembergite(6).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarncampigliahedembergite(7).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 skarncampigliahedembergite(8).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
skarn(4).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarn(20).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarn(9).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
skarn(22).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarn(23).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarn(24).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
skarn(25).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarn(26).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 skarn(27).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 skarn(33).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 10x (Field of view = 2mm)		 skarn(37).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergitecampiglia(3).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergitecampiglia(4).jpg

hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(2).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(5).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
hedembergite2017(6).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(7).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(8).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
hedembergite2017(9).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(10).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(11).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(13).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(14).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(16).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(17).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(19).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(20).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
hedembergite2017(23).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(24).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(25).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
hedembergite2017(26).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(27).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(28).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
hedembergite2017(29).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(30).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(31).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
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Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(36).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(39).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)
hedembergite2017(40).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(41).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(42).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)
hedembergite2017(56).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)		 hedembergite2017(57).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. XPL image, 2x (Field of view = 7mm)		 hedembergite2017(73).jpg

Fibrous hedenbergite crystals in a skarn from Campiglia Marittima, Italy. PPL image, 2x (Field of view = 7mm)