Mineralape
Probertite
Robert M. Lavinsky·CC BY-SA 3.0·Wikimedia

Probertite

NaCaB5O7(OH)4·3H2O
Monoclinic IMA grandfathered

Probertite is a rare borate mineral with the chemical formula sodium calcium pentaborate tetrahydroxide trihydrate. It belongs to the monoclinic crystal system and is classified in the Strunz system as 6.EB.15. This mineral typically exhibits a vitreous luster and is usually colorless or white in appearance. It has a relatively low hardness on the Mohs scale and a moderate density. Probertite is part of the borate mineral group, which is characterized by complex boron-oxygen structures and often forms in evaporitic or hydrothermal environments.

Composition

Composizione (% in peso)
O
B
Ca
Na
  • OOxygen63.8%
  • BBoron15.4%
  • CaCalcium11.4%
  • NaSodium6.5%
  • HHydrogen2.9%

Overview

Probertite is a rare borate mineral with the chemical formula sodium calcium pentaborate tetrahydroxide trihydrate. It belongs to the monoclinic crystal system and is classified in the Strunz system as 6.EB.15. This mineral typically exhibits a vitreous luster and is usually colorless or white in appearance. It has a relatively low hardness on the Mohs scale and a moderate density. Probertite is part of the borate mineral group, which is characterized by complex boron-oxygen structures and often forms in evaporitic or hydrothermal environments.

Etymology

Probertite is named after Frank H. Probert, in recognition of his contributions to mineralogy. The mineral was officially recognized with a grandfathered IMA status, indicating it was described before the establishment of the current IMA nomenclature rules.

How to recognize it

Probertite can be identified by its low hardness, which is typically below 4 on the Mohs scale, and its vitreous luster. It is usually colorless or white, and its streak is also white. Due to its rarity and softness, it is not commonly confused with other minerals, though its appearance may resemble other borate or evaporite minerals.

Trivia

Probertite is notable for its complex chemical formula, which includes multiple boron atoms and water molecules. It is one of the few minerals named after a person who contributed to mineralogy rather than a geographical location. Additionally, its classification as a grandfathered mineral highlights its historical significance in the field.

Spiritual meaning and crystal therapy

Mantra
Clarity and insight arise.

Spiritual meaning

Probertite is a rare and enigmatic stone, often associated with spiritual exploration and inner transformation. It is believed to support deep introspection and the uncovering of hidden truths within the self.

Esoteric properties

Probertite is said to enhance intuition and spiritual awareness. It is associated with calming the mind and aiding in emotional release, helping to bring clarity to complex situations.

Associated chakra

Probertite is traditionally linked to the third eye and crown chakras due to its translucent appearance and ethereal energy. It is believed to help open higher states of consciousness and enhance psychic perception.

Crystal therapy use

Used in meditation and spiritual layouts, probertite is often placed on the third eye or crown chakra. It is also worn as jewelry to support intuitive insights and mental clarity.

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.

Affirmations

Positive first-person sentences to repeat mentally or aloud while holding the crystal, during meditation or at the start of the day. They help focus intention and attune to the energy traditionally attributed to the stone.

  • I trust my inner guidance.
  • I release emotional blocks.
  • I embrace spiritual growth.

Cleansing and recharging

Pulizia & Ricarica

To cleanse probertite, use moonlight or a sound bowl. As a soft and water-soluble stone, it should not be placed in water or salt. Gently smudging with sage or palo santo is also safe.

Guided meditation

Sit comfortably with probertite in hand. Breathe deeply and visualize its light expanding in your mind. Focus on opening your third eye and crown chakras to receive higher insights and wisdom.

Body placement

Posizionamento sul corpo

Place probertite on the third eye or crown chakra during therapy lay-down to support intuitive awakening and spiritual connection.

  • Corona
  • Terzo occhio
  • Gola
  • Cuore
  • Plesso solare
  • Sacrale
  • Radice

Feng Shui

In Feng Shui, probertite aligns with the southwest sector for love and relationships and the center for overall health and balance. Place it in these areas to encourage emotional harmony and spiritual well-being.

Pairings with other crystals

Probertite pairs well with amethyst and selenite in healing layouts. Amethyst enhances spiritual clarity, while selenite amplifies probertite’s intuitive properties and supports higher awareness.

Crystal bath

Not recommended for direct water immersion — instead place the stone NEXT to the bathtub or use indirect elixir method. Its water-soluble nature means it can be damaged if submerged.

Frequently asked questions

Probertite is considered a rare mineral, typically found in limited localities, and is not commonly encountered in commercial mineral collections.