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Cavansite

Cavansite

Cavansite Formulation

Cavansite is a hydrated silicate mineral consisting of Ca [VO | Si4O10] · 4H2O.

The crystal water-containing mineral is of medium to green-blue color. The stroke color is light blue.

The silicate crystallizes in the orthorhombic crystal system, whose needle-like, long prismatic crystals are arranged as radial jet aggregates.

Cavansite has a glassy gloss with transparent transparency. The cleavage is good, the rupture is uneven. The Mohs hardness varies between 3 and 4, the specific gravity is given as 2.2.

The name Cavansite is composed of the three elements that are significantly involved in the composition of the mineral:

  1. Calcium
  2. Vanadium
  3. Silicon

Cavansite Origin And History

Cavansite is a mineral of magmatic origin, which is formed under hydrothermal conditions. Due to its formation, Cavansite is therefore predominantly found in bladder cavities of basalt, tuff or andesite. Occasionally occurrences also occur in corridors of carbonate-containing rocks.

Associated with Cavansite are u.a. Apophyllite, stilbite, heulandite, copper, analcime, calcite and mordenite.

Notable occurrences of the mineral are not common due to the rarity of cavansite, found mainly in New Zealand; Oregon / USA; Brazil and India.

Cavansite Colors

The blue to greenish blue mineral forms to tabular crystals and radial to beam aggregates. The blue-green color of cavansite is caused by the vanadium involved in the molecular structure. In the same empirical formula, but the somewhat different spatial arrangement of the layered silicate occurs in nature, the mineral pentaquonite before cavansite and pentagonite are dimorphic. 

Cavansite Effects

psychologically Cavansite strengthens intuition and insight. The mineral provides joie de vivre and spontaneity and helps to reduce inhibitions and fears. Cavansite enhances logical thinking and concentration but is unsuitable for routine tasks. 

Physically Cavansite awakens strengthens eyesight and life energy. It helps with tension in the head area and is used for tinnitus. Cavansite improves detoxification and works against inflammation and pain.

Cavansite Suitability

Cavansite is a calcium vanadium phyllosilicate, Its main constituents are calcium, vanadium, and silicon that’s why it’s given the name cavansite. It is rare, because of its bright blue color sought by collectors mineral has no economic importance and occurs only in a few, previously known localities.

Cavansite is particularly resistant to acids and dissolves only with difficulty. On contact with nitric acid Cavansite takes on a green-brown color. Sulfuric acid produces white precipitates.

Cavansite Charging/Discharging

Cavansite is especially interesting for mineral collections.

Cavansite is formed hydrothermally in cavities of volcanic rocks such as basalt and tuff. Paragenesis minerals are the zeolites heulandite, stilbite, and thomsonite.

ColorBlue
Greenish Blue
TransparencyTransparent
Mineral ClassPhyllosilicates
FormulaCa (VO) Si 4 O 10 4H2 O
Crystal SystemOrthorhombic
Hardness3 - 4
Density2.33
FractureUneven, Brittle
FissionabilityWell
ShineVitreous / Span

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