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Anorthite – Everything About This Mineral You Need to Know

limz Published On Tue Feb 11 2020   Modified On Tue Feb 11 2020
Anorthite – Everything About This Mineral You Need to Know

Anorthite is a calcium-rich mineral that occurs in many basic igneous rocks. It is the calcium end member of the plagioclase feldspar series. It has a brittle tenacity and its cleavage is perfect in one and good in another direction.

Anorthite symbolizes formal, conservative, passion, happiness, empowerment, clarity, freshness, and integrity.

Let us learn more about Anorthite.


Anorthite is a common rock-forming mineral that contains a high proportion of calcium to sodium. It has a triclinic crystal system with prismatic structure and transparent to translucent diaphaneity. 

Anorthite is strongly associated with the crown chakra and it helps to open up and balance the crown chakra. It helps the wearer to clear up emotional insecurities, promote mental peace, and heighten the state of consciousness. 

Origin and History

Image Source: Wiktionary

Anorthite was first described in 1823 and was named by Gustav Rose, a German mineralogist, from the Greek word αν and oρθός which means "less than straight, not perpendicular". Its name was given in allusion to the odd angles at which crystals grow. The type localities of Anorthite are Monte Somma and Valle di Fassa, Italy. 

Formation Process

Anorthite is the rarest member of the plagioclase feldspar group that occurs mostly in mafic igneous rocks and metamorphic rocks of granulite facies. It also occurs in metamorphosed carbonate rocks and corundum deposits.


The chemical formula of Anorthite is CaAl2Si2O8. It has a hardness of 6 according to the Mohs scale and vitreous luster.


  • Barium Anorthite
  • Bytownite
  • Labradorite
  • Lindsayite
  • Lynx Eye
  • Oregon Sunstone
  • Spectrolite

Colors Available

Oregon Sunstone Gemstone.
Oregon Sunstone Gemstone.
Image Source: John Dyer Gems
  • Colorless
  • Reddish Gray
  • White

Mines Available

  • Mount Keenan Mine, New South Wales, Australia
  • Copper Mine River Area, Nunavut, Canada
  • Saranovskii Mine, Permskaya Oblast, Russia

Cost Per Carat

Although Anorthite is very rare, it can cost from around $20 to $80 per carat.


  • Anorthite can be used in the manufacture of glass, ceramics, and cement.
  • It can also be used as specimens for collectors.
  • It is also used as a gemstone in jewelry.

Spiritual Properties

  • Anorthite helps to dispel negativity, promote lucid dreams, awaken psychic abilities, combat materialism, control your ego, and amplify luck.
  • It can be used to aid digestive problems, muscle spasms and cramps, obesity, hormonal problems, and strengthen nerve impulses.
  • It also helps to promote courage and truth, clarity, confidence, love, willpower, satisfaction, and tolerance.


Bytownite, A Variety of Anorthite.
Bytownite, A Variety of Anorthite.
Image Source: KSC Crystals
  • Anorthite can be found on the moon and they are abundant there but rare on Earth.
  • It is rarer in surficial rocks because of its high weathering potential in the Goldich dissolution series.
  • Anorthite may contain sodium but their amount must be less than 10% to be Anorthite.
  • It has a white streak and an uneven to conchoidal fracture.

Jewelry Stores Near You

  • Silver Cove Edmonton, Edmonton, Alberta, Canada
  • Mardani Fine Minerals, New York, USA
  • Tucson Mineral and Gem World, Tucson, Arizona, USA

Online Stores

Visit Stoneharu for more information about stones and gems.