Azurite is a vibrant, deep-blue copper carbonate mineral frequently sought after for its intense color and beautiful crystal formations. It is often found as a weathering product of copper ore deposits and frequently alters into green malachite through hydration.
Is this azurite?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch azurite with a known reference. Azurite sits at Mohs 3.5-4 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Azurite leaves a light blue streak.
- 3Read the lusterHold the specimen under a strong light. Azurite typically shows a vitreous to dull luster.
- 4Match the color rangeCompare against the expected color range: azure blue, deep blue.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: prismatic crystals, massive, botryoidal, crusts.
Often confused with
Azurite vs. its common look-alikes — and how to tell them apart in the field.
How to tell apart: Azurite is noticeably harder (Mohs 3.5-4 vs. 2.5); streak differs — Azurite leaves light blue, Linarite leaves pale blue; luster reads vitreous to dull on Azurite and vitreous on Linarite.
How to tell apart: Streak differs — Azurite leaves light blue, Shattuckite leaves blue; luster reads vitreous to dull on Azurite and dull on Shattuckite.
How to tell apart: Streak differs — Azurite leaves light blue, Chrysocolla leaves white; luster reads vitreous to dull on Azurite and vitreous on Chrysocolla.
Often found alongside azurite
Minerals reported to co-occur with azurite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- Cu₃(CO₃)₂(OH)₂
- Mohs hardness
- 3.5-4
- Density
- 3.7-3.9 g/cm³
- Colors
- Streak
- Light Blue
- Luster
- Vitreous to Dull
- Transparency
- Translucent
- Crystal system
- Monoclinic
- Crystal habit
- Prismatic Crystals, Massive, Botryoidal, Crusts
- Cleavage
- Perfect in One Direction, Fair in Two
- Rarity
- Common
- Uses
- Collector, Decorative, Pigment
- Host rock
- Oxidized Zones of Copper Ore Deposits
- Typical price
- $10-100 thumbnail, $200-2000 cabinet specimen
Where rockhounds find azurite
89 mapped spotsClassic worldwide localities
- Chessy-les-Mines, France
- Tsumeb, Namibia
- Bisbee, Arizona, USA
- Milpillas Mine, Mexico
- Broken Hill, Australia
U.S. states with azurite
Each link opens a state-specific list of mapped rockhounding spots that produce azurite.
Field-hunting tip
Look in oxidized zones of copper ore deposits country — that is the host setting where azurite typically forms. If you start seeing malachite, goethite, cerussite in float, you are in the right ground. Field specimens usually show a prismatic crystals, massive, botryoidal, crusts habit, so train your eye for that shape before scanning the outcrop. In the U.S., the densest reported localities are in Utah, Missouri, Pennsylvania — start trip planning there.
Common questions
How do you identify azurite?+
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Find azurite on the map
RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.
