
Prehnite
Prehnite is a hydrous calcium aluminum silicate mineral with the chemical formula Ca₂Al₂Si₃O₁₀(OH)₂. It crystallizes in the orthorhombic crystal system and is classified as a phyllosilicate in the Strunz system (9.DP.20) and as a nesosilicate in the Dana system (72.1.3.1). The mineral typically exhibits a dull to vitreous luster, with colors ranging from white to green, yellow, or gray. It has a hardness of 6 to 6.5 on the Mohs scale and a specific gravity of approximately 2.8 to 3.0. Prehnite is commonly found in fine-grained, compact forms and is often associated with low-temperature hydrothermal processes.
Overview
Prehnite is a hydrous calcium aluminum silicate mineral with the chemical formula Ca₂Al₂Si₃O₁₀(OH)₂. It crystallizes in the orthorhombic crystal system and is classified as a phyllosilicate in the Strunz system (9.DP.20) and as a nesosilicate in the Dana system (72.1.3.1). The mineral typically exhibits a dull to vitreous luster, with colors ranging from white to green, yellow, or gray. It has a hardness of 6 to 6.5 on the Mohs scale and a specific gravity of approximately 2.8 to 3.0. Prehnite is commonly found in fine-grained, compact forms and is often associated with low-temperature hydrothermal processes.
Etymology
Prehnite is named after Hendrik van Prehn, a Dutch mineralogist and military officer who first described the mineral in the 18th century.
Spiritual meaning and crystal therapy
Spiritual meaning
Prehnite is traditionally associated with peace, serenity, and spiritual awakening. It is believed to help in emotional healing and encourage a deeper connection with one's inner self and the divine.
Esoteric properties
Prehnite is said to calm the mind, ease stress, and promote emotional balance. It is associated with nurturing energy, intuition, and a gentle yet powerful presence that supports personal growth and inner peace.
Associated chakra
Prehnite is traditionally linked to the heart and solar plexus chakras, as its soft green tones are believed to support emotional healing and inner strength while aligning these energy centers for harmony and balance.
Crystal therapy use
In crystal therapy, prehnite is often placed on the heart or solar plexus during meditation or worn as jewelry. It is also used in spaces to create a calming atmosphere and is sometimes placed under a pillow to support restful sleep.
Information on crystal therapy is provided for cultural and traditional purposes only. It does not replace medical advice or treatment. Always consult a doctor for health issues.