Skip to content
Mineralati

Minerals

6323 results

Lavrentievite is one of the rarest mercury minerals known, with only two very close known localities worldwide (Arzakskoye, Uyuk Range, Eastern Siberia, Russian Federation). It occurs in this specimen as yellowish aggregates associated to minoritary massive cinnabar. Mineral

Lavrentievite

lavrentievite

Formula
Hg²⁺3S2(Cl,Br)2
Brown sharp crystals of the rare iron-nickel chloride mineral from a little known locality in USA: Coalton, Boyd County, Kentucky, United States of America. Mineral

Lawrencite

lawrencite

Formula
FeCl2
Lawsonbauerite Locality: Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA (Locality at mindat.org) An extraordinarily rich specimen of what is considered rare even by Franklin standards, the complex sulfate lawsonbaurite. The rich cluster of intergrown brown bladed crystals is easily visible and measures approx. 3 x 3 cm on the display face. There is also hauckite on this piece, present as microcrystals, I am told. The specimen was noted as "very rare" even in Elling's comprehensive collection. It was named after lawson bauer of course...a former head chemist of NJ Zinc Co. The species is known only from the Franklin-Sterling Hill mining district 8 x 7 x 4 cm Mineral

Lawsonbauerite

lawsonbauerite

Formula
(Mn²⁺,Mg)9Zn4(SO4)2(OH)22 * 8H2O
Lawsonite Locality: Reed Station, Tiburon Peninsula, Marin County, California, USA (Locality at mindat.org) Size: 6.1 x 3.2 x 2.5 cm. This specimen is from the type locality in California. It features two elongated, lustrous and translucent crystals of pastel pink, lawsonite, in crystals to 4.0 cm in length. This very rare species, embedded in a mica schist, is a calcium, aluminum silicate. Ex. John Ydren collection. Mineral

Lawsonite

lawsonite

Formula
CaAl2Si2O7(OH)2·H2O
Outstanding sky blue crystals of the extremely rare organic mineral lazaraskeite from the type and only known locality worldwide in Arizona (Western End, Pusch Ridge, Pima County, Arizona, United States of America). As an organic compound, the formula may also be written as Cu(OCOCH2OH)2 or Cu[O(CO)CH2(OH)]2. Known as a synthetic compound ('bis(glycolato)copper(II)') - first natural crystalline glycolate mineral. Mineral

Lazaraskeite

lazaraskeite

Formula
Cu(C2H3O3)2
Greenish yellow crystals of the very rare mineral lazarenkoite from the type locality: Khovu-Aksy, Tuva, Siberia, Russian Federation. Lazarenkoite is one of the very few arsenites known. Ex. Dr. Hartel collection. Mineral

Lazarenkoite

lazarenkoite

Formula
(Ca,Fe²⁺)Fe³⁺As³⁺3O7 * 3H2O
White crystals of the extremely rare cadmium mineral lazaridisite (IMA 2012-043) from the famous Tsumeb deposit (Tsumeb Mine, Otavi Highlands, Namibia). Analyzed specimen by SEM-EDS and P-XRD. Mineral

Lazaridisite

lazaridisite

Formula
Cd3(SO4)3·8H2O
A frequent association of mixed Sb–Bi members of the lillianite homologous series with N = 4 from Kutná Hora ore district, Czech Republic: Ag,Bi-bearing galena (white) replaced by lamellae of terrywallaceite (Twl) and replacement rims of holubite (Hlb) and lazerckerite (Lze, darker than Hlb). The succession is galena → terrywallaceite → holubite → lazerckerite. BSE image of sample ST 29. Mineral

Lazerckerite

lazerckerite

Formula
Ag3.75Pb4.50(Sb7.75Bi4)S24
Lazulite Locality: near Rapid Creek, Yukon, Canada Size: miniature, 5.4 x 5.1 x 2.4 cm Lazulite This matrix specimen features several 3-dimensional fat crystals, to just over 1.0 cm across, of gemmy, lustrous, bicolor, blue and green lazulite. Peripheral contact at the very base is insignificant and actually adds a bit of color contrast to the crystals themselves, and the display face is pristine. Mineral

Lazulite

lazulite

Formula
MgAl2(PO4)2(OH)2
Lazurite Locality : Sar-e-Sang District, Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, Afghanistan. Mineral

Lazurite

lazurite

Formula
Na[(AlSiO4)SO4]
Lead Locality: Långban, Filipstad, Värmland, Sweden (Locality at mindat.org) Size: 5.1 x 3.5 x 3.2 cm. A great, old classic. This is a dense, heavy (131 grams) specimen of lead which is composed entirely of hoppered growth crystals to 1.0 cm in length. Native lead with well-developed crystals like this is extremely rare and desired by collectors of such oddities. In fact, lead is one of the more difficult of the common & major ore metals to obtain in native crystals; and the best really do come from just a few old mines in Langban and Harstigen, in Sweden. Such pieces mostly date to the 1800s or early 1900s (and this label is mid-1900s). Add to this that the location of the old and famous Langban Mine in Sweden has some value as well, and then this specimen becomes a treasure. Mineral

Lead

lead

Formula
Pb
Mineral

Leadamalgam

leadamalgam

Formula
Pb0.7Hg0.3
Leadhillite Locality: Beer Cellar Mine, Granby Field, Tri-State District, Newton County, Missouri, USA (Locality at mindat.org) Size: 3.8 x 3.3 x 3.2 cm. A 7 mm sharp crystal of leadhillite with classic greenish color, perched in a protected vug in cerussite matrix. Although small, this is a SUPERB, incredibly sharp crystal for the locality. Beer Cellar leadhillites are one of those holy grails of a US collector. Ex. E.R. Chadbourn and George Feist Collections. Old material dating to the late 1800s and very early 1900s. Mineral

Leadhillite

leadhillite

Formula
Pb4(SO4)(CO3)2(OH)2
Mineral

Lebedevite

lebedevite

Formula
K4Na14Cu14O8(AsO4)8Cl6
Lechatelierite (Var.: fulgurite) Locality: Great Sand Sea, Egypt (Locality at mindat.org) Size: 20.5 x 0.7 x 0.7 cm. A fulgurite is formed when lightning flashes into desert sand and literally melts the sand around the impact site into a glass cast following the shape of the electrical discharge. Obviously, large fulgurites, being thin-walled and elongated as they are, are fragile and hard to obtain. This is a fairly good-sized specimen, though, and from the classic locality for the material that I first was fascinated by as a kid, several decades ago now. Mineral

Lechatelierite

lechatelierite

Formula
SiO2
Mineral

Lechnerite

lechnerite

Formula
Ag10Cu4HgPb33Sb58S128
Mineral

Lecontite

lecontite

Formula
(NH4,K)NaSO4 * 2H2O
Mineral

Lecoqite-(Y)

lecoqite-(Y)

Formula
Na3Y(CO3)3·6H2O
Mineral

Lednevite

lednevite

Formula
Cu[PO3(OH)]·H2O
Yellow-orange crystals of the extremely rare mineral leesite (IMA 2016-084) from the type and only known locality worldwide in Utah: Jomac Mine, San Juan County, Utah, United States of America. Mineral

Leesite

leesite

Formula
K(H2O)2[(UO2)4O2(OH)5]*3H2O
Exceptionally big and well formed striated crystal of the extremely rare lefontite (IMA 2014-075) from one of the only three known localities worldwide (Seco Claim, Taquaral, Minas Gerais, Brazil). The find in this locality is a new discovery. Lefontite is a Fe-Al-Be phosphate. Mineral

Lefontite

lefontite

Formula
Fe2Al2Be(PO4)2(OH)6
Legrandite Locality : Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico - (Crystal 1.4cm) Mineral

Legrandite

legrandite

Formula
Zn2AsO4(OH)·H2O
Mineral

Leguernite

leguernite

Formula
Bi12.67O14(SO4)5
Mineral

Lehmannite

lehmannite