RockVault
Rhodochrosite

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

trigonaluncommonCarbonates

Rhodochrosite

MnCO3

This specimen features vibrant pink to rose-red rhodochrosite displaying a botryoidal habit, characterized by its rounded, grape-like formations. It is associated with clear to milky quartz crystals.

Rhodochrosite Physical Properties

Mohs Hardness

3.5

Crystal System

trigonal

Luster

vitreous

Streak Color

white

Cleavage

perfect rhombohedral on {1011}

Fracture

uneven to conchoidal

Specific Gravity

3.45

Colors

pink, rose-red, red, brownish-red, yellowish-gray, white

Transparency

transparent to translucent

Type Locality

Oppu mine, Nishimeya-mura, Naka-Tsugaru-gun, Aomori Prefecture, Tohoku, Japan

Mineral Group

Carbonates

Uses

jewelry, ornamental stone, collector, minor manganese ore

Associated Minerals

quartz

Rarity

uncommon

Geological Context

Rhodochrosite typically forms in hydrothermal veins associated with silver, lead, and copper deposits, and can also be found in metamorphic and sedimentary environments, often in low-temperature conditions.