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Howlite
Main Deposits
Canada (Nova Scotia, where it was discovered), United States (California), Turkey, Mexico, and Germany
Description and Characteristics
Howlite is a calcium borosilicate hydroxide found primarily in evaporite deposits, often forming irregular nodules that resemble cauliflower. In its natural state, it is creamy white or grayish, crisscrossed by dark veins (black or brown) of matrix from other minerals. It is a porous mineral, which has led to it being frequently dyed to imitate other gemstones. Although it is rarely found in well-defined crystals, its smooth texture and sub-vitreous lustre make it ideal for carving beads, cabochons, and ornamental figures.
| Chemical Formula | $$Ca_2SiB_5O_9(OH)_5$$ |
|---|---|
| Luster | Sub-vitreous to vitreous, sometimes dull |
| Streak | White |
| Fracture | Conchoidal to irregular |
| Cleavage | None (though rare crystals have perfect cleavage) |
| Hardness | 3.5 y 6.5 Mohs |
| Crystal System | Monoclinic |
Did you know...?
Due to its porosity and white color, howlite is the "great imitator" of the mineral world. It is commonly dyed blue to be sold as "turquenite" (imitating turquoise) or red to imitate coral. Its name honors Henry How, the Canadian chemist and geologist who first described it in 1868 after finding it in a gypsum mine. A simple way to distinguish it from real turquoise is its hardness: howlite is much softer and is easily scratched with a knife.
New-Age Properties
Howlite is known as the "stone of peace and patience." It is one of the most effective crystals for calming an overactive mind and facilitating deep sleep, making it ideal for those suffering from insomnia. Spiritually, it helps prepare the mind to receive wisdom and intuitive insights. Mentally, howlite is excellent for eliminating anger, both one's own and that directed toward oneself, fostering calm and reasoned communication. It helps strengthen positive character traits and soothes turbulent emotions, bringing a sense of serenity and inner peace.
Uses of Howlite
Howlite is used as a mineral in jewellery, home décor and pebble collecting, amongst other uses.