Senkevichite is a rare potassium-sodium-calcium titanium silicate mineral found primarily in alkaline igneous environments. It typically occurs as small platy or tabular crystals within pegmatitic pockets alongside other rare-earth and alkali-rich minerals. Collectors primarily find this mineral in the Khibiny and Lovozero massifs of the Kola Peninsula.
Is this senkevichite?
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 senkevichite with a known reference. Senkevichite sits at Mohs 5, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Senkevichite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Senkevichite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: yellow, brown, tan.
- 5Look at form & habitCrystal system: triclinic. Typical habit: platy crystals.
Often confused with
Senkevichite vs. its common look-alikes, and how to tell them apart in the field.
How to tell apart: Senkevichite is noticeably harder (Mohs 5 vs. 3-4); streak differs, so Senkevichite leaves white, Kupletskite leaves brown; luster reads vitreous on Senkevichite and submetallic on Kupletskite.
How to tell apart: Senkevichite is noticeably harder (Mohs 5 vs. 3); streak differs, so Senkevichite leaves white, Astrophyllite leaves golden-brown; luster reads vitreous on Senkevichite and submetallic on Astrophyllite.
Often found alongside senkevichite
Minerals reported to co-occur with senkevichite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- KNaCaTiSi₄O₁₂OH
- Mohs hardness
- 5
- Density
- 3.17 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Triclinic
- Crystal habit
- Platy Crystals
- Cleavage
- Perfect
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Alkaline Pegmatites
- Typical price
- $50-300 per specimen
Where rockhounds find senkevichite
Classic worldwide localities
- Kola Peninsula, Russia
Field-hunting tip
Look in alkaline pegmatites country, the host setting where senkevichite typically forms. If you start seeing aegirine, microcline, nepheline in float, you are in the right ground. Field specimens usually show a platy crystals habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify senkevichite?+
Where is senkevichite found?+
How much is senkevichite worth?+
What rocks look like senkevichite?+
What minerals are found with senkevichite?+
What kind of rock does senkevichite form in?+
What is senkevichite used for?+
Find senkevichite on the map
RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.
