Londonite Gallery

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Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈, Tourmaline (Var: Rubellite) : AD₃G₆(BO₃)₃[T₆O₁₈]Y₃Z
	Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar 6.2 x 4.3 x 3 cm. Classic specimen from Madagascar of large (up to 1.8 cm) yellow Londonite crystals associated with Rubellite. The crystals are exceptional well-formed and large for the species.
© Rob Lavinsky	Photo ID: 120976 View Count: 115
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar An excellent, gemmy and lustrous, 1.8 cm londonite crystal with exceptional yellow color on matrix from the co-type locality in Madagascar. Londonite is the ultra-rare, cesium-dominant analogue of rhodizite. This is a relatively large, and certainly unusually colorful crystal. One side of the rear of the crystal is cleaved, but it is certainly not ...
© Rob Lavinsky	Photo ID: 44405 View Count: 566
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈, Tourmaline : AD₃G₆(BO₃)₃[T₆O₁₈]Y₃Z
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar Deep yellow londonite measuring 16 x 10 x 10 mm on matrix in association with reddish-brown 'tourmaline'. Overall size: 40 x 28 x 17 mm Photo and collection Antonio Borrelli
© Antonio Borrelli	Photo ID: 43998 View Count: 389
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar Crystal size 2 cm, on Rubellite crystals. Photo and collection Giovanni Fraccaro.
© GiovanniFraccaro	Photo ID: 44073 View Count: 338
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar While not as large or yellow as the next londonite, listed below, this 1.5 cm across crystal, on a quartz matrix, does have the remnants of rubellite crystals for a color contrast. I actually got this from Dave London years ago and it comes with his signed card. 4.9 x 3.2 x 2.2 cm
© Rob Lavinsky	Photo ID: 54302 View Count: 266
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar Usually, a newly described mineral species is but a speck on its host matrix. Not so londonite, from Madagascar, which has been a valid species less than 10 years. In this particular specimen, where the crystal is 2.1 cm across, the translucence, luster, and yellow color on white sugary quartz make this piece outstanding. To boot, this one came ...
© Rob Lavinsky	Photo ID: 54303 View Count: 266
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar 2.6 x 1.7 x 1.1 cm. This thumbnail features a translucent and lustrous, greenish-yellow, 2.0 cm londonite crystal on a sliver of matrix. Ex. Dave London Collection.
© Rob Lavinsky	Photo ID: 54304 View Count: 266
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar A yellow, matte luster, translucent, 2.00 cm across, londonite crystal, sits perched on feldspar matrix. The color of this londonite is richer than usual. 7 x 3.3 x 3 cm
© Rob Lavinsky	Photo ID: 54305 View Count: 221
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar 5.4 x 4.3 x 4.0 cm. Most newly found and named species are micro-crystals, but this is the exception. Named for University of Oklahoma mineralogy professor, David London, this is the rare cesium-rich analog of rhodizite - and it is a beautiful mineral species, luckily for him! From the co-type deposit in Madagascar, this large, well formed crystal ...
© Rob Lavinsky	Photo ID: 171921 View Count: 115
Londonite : (Cs,K,Rb)Al₄Be₄(B,Be)₁₂O₂₈
	Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar Perfect crystal, with natural fractures within but complete all around, intense yellow, partially transparent, of great quality, associated with Tourmalina (perhaps Liddicoatite), in pegmatite matrix. Up to 20x15 mm the crystal. In my personal Collection. Photo Simone Citon.
© Simone Citon	Photo ID: 174308 View Count: 84