About Howlite

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Keep reading to discover more about Howlite

  • Mineralogy and geology*
  • Metaphysical, Spiritual and Healing** Properties***
  • Common Associations

Mineralogy and Geology of Howlite

Mineral formula: Ca2B5SiO9(OH)5

Crystal system: Monoclinic

Crystal habit: Rare crystals are flattened prismatic with pointed terminations. More often in compact nodular masses, internally dense and structureless. Chalk-like, earthy, scaly, slaty structured.

Cleavage: none

Fracture:  irregular

Color: clear to white or brown

Luster: Sub-vitreous

Diaphaneity: Individual crystals are transparent, but masses of howlite are usually opaque

Moh’s scale hardness: 6 ½ for individual crystals, but the massive form is quite soft.

Streak: white

Specific gravity: 2.62

Named after:  Henry How (1828-1879), a chemist, geologist and mineralogist.

Type locality: Black’s quarry, Windsor, Hants County, Nova Scotia, Canada

Geological occurrence: Occurs in borate deposits.

Spiritual, Metaphysical and Healing Properties

Howlite works to calm the mind and emotions, facilitating communication, awareness, and emotional expression. It may support ambition to reach one’s goals and eliminating hesitation with respect to action. It can help those who tend to be rude, critical, selfish, and facetious to be less so.

Common Associations

  • Chakra – all
  • Numerology – vibrates to the number 2.
  • Zodiac – Gemini
  • Birthstone – no association
  • Wedding Anniversary – no association

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* Mineralogical information is from mindat.org

** Always consult with your medical professional for any physical or long-term healing issues.

*** Metaphysical properties come from: 

Love Is in the Earth (1995) Melody, Earth-Love Publishing House, 726 pp.

The Crystal Bible, A Definitive Guide to Crystals (2003) Judy Hall, Walking Stick Press, 399 pp.

Crystal Muse (2017) Heather Askinosie and Timmi Jandro, Hay House, 285 pp.

Crystal Gridwork (2018) Kiera Fogg, Weiser Books, 128 pp.