Ammonioalunite
Ammonioalunite is a hydrous sulfate mineral with the chemical formula (NH4)Al3(SO4)2(OH)6. It crystallizes in the trigonal crystal system and belongs to the space group R-3m. This mineral is classified as a sulfate in the Strunz system (7.BC.10) and in the Dana system (30.2.4.6). It exhibits a vitreous to pearly luster and typically forms as a white to pale yellow, prismatic or tabular crystal. Ammonioalunite has a hardness of approximately 3.5 to 4 on the Mohs scale and a relatively low density. It is a member of the alunite group, which includes similar sulfate minerals with complex anionic structures.
Composition
- OOxygen51.5%
- AlAluminium18.6%
- SSulfur14.7%
- NNitrogen12.9%
- HHydrogen2.3%
Overview
Ammonioalunite is a hydrous sulfate mineral with the chemical formula (NH4)Al3(SO4)2(OH)6. It crystallizes in the trigonal crystal system and belongs to the space group R-3m. This mineral is classified as a sulfate in the Strunz system (7.BC.10) and in the Dana system (30.2.4.6). It exhibits a vitreous to pearly luster and typically forms as a white to pale yellow, prismatic or tabular crystal. Ammonioalunite has a hardness of approximately 3.5 to 4 on the Mohs scale and a relatively low density. It is a member of the alunite group, which includes similar sulfate minerals with complex anionic structures.
Etymology
Ammonioalunite is named after the ammonium cation (NH4+), which is a key component of its chemical structure.
Geological genesis
As a sulfate mineral in the alunite group, ammonioalunite likely forms under low-temperature hydrothermal or secondary conditions, often in association with acidic environments and evaporitic processes.
Spiritual meaning and crystal therapy
Spiritual meaning
Ammonioalunite is a rare and sacred stone, symbolizing transformation and emotional clarity. It is traditionally believed to support spiritual awakening and encourage deep introspection.
Esoteric properties
Ammonioalunite is said to be associated with calming the mind and promoting emotional balance. It is believed to help release negative energies and support inner harmony.
Associated chakra
Ammonioalunite is traditionally associated with the heart chakra due to its calming and emotionally balancing properties, helping to open and align the heart.
Crystal therapy use
In crystal therapy, ammonioalunite is often placed on the heart chakra during meditation or worn as jewelry to support emotional healing and 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 release emotional blockages.”
- “I embrace inner peace and clarity.”
- “I open my heart to love and healing.”
Cleansing and recharging
Pulizia & Ricarica
To cleanse ammonioalunite, gently pass it through incense smoke or place it in moonlight overnight. Avoid salt or direct sunlight, as these may damage the stone.
Guided meditation
Sit comfortably with ammonioalunite in hand. Breathe deeply and focus on your heart. Visualize a soft green light surrounding you, bringing emotional balance and peace.
Body placement
Posizionamento sul corpo
Place ammonioalunite over the heart chakra (center of the chest) during therapy to support emotional healing and balance.
- Corona
- Terzo occhio
- Gola
- Cuore
- Plesso solare
- Sacrale
- Radice
Feng Shui
In Feng Shui, ammonioalunite can be placed in the southeast sector for wealth and abundance, or in the southwest for love and harmonious relationships.
Pairings with other crystals
Ammonioalunite pairs well with rose quartz to enhance heart-centered healing and with amethyst to deepen spiritual awareness and calm the mind.
Crystal bath
Not recommended for direct water immersion — instead place the stone NEXT to the bathtub or use indirect elixir method.