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 Nova Scotia Minerals: Amblygonitespacer

amblygonite

AMBLYGONITE

(Li, Na)AlPO4(F, OH)
Lithium Sodium Aluminum Phosphate Fluoride Hydroxide


Brazil Lake Li, Ta, Sn Pegmatite, Yarmouth County
UTM (NAD27)
Zone 20
 Northing 4874957
 Easting 260061
Details:

 Travel northeast from Yarmouth along Highway 340 towards the community of Carleton, Yarmouth County. Approximately 0.5 km south of where the Pleasant Valley Road intersects the highway, turn left (north) onto the gravel Holly Road. Travel northwest along Holly Road for 2.2 km. At that point you will note a skid road leading north from the Holly Road. This skid road was constructed for the Nova Scotia Department of Natural Resources diamond-drilling of the prospect. The pegmatite outcrops that comprise the prospect are located in the woods on both sides of the Holly Road. The diamond-drill skid road leads north for a couple of hundred metres and ends immediately west of one of the pegmatite outcrops. At a point about halfway between this outcrop and the Holly Road is a second outcrop of pegmatite.

References:
 NSMOD #P13-001
Further Info:

 The Brazil Lake Pegmatite is characterized by the presence of very large spodumene crystals (<60cm), and an accessory mineral assemblage which includes; tourmaline, apatite, cassiterite, wolframite, zircon, columbite/tantalite, epidote and very minor lithiophilite (Li(Mn,Fe)PO4), fillowite, amblygonite/montebrasite and cookeite (Hughes, 1995). Although small, dark green beryl crystals were reported to occur within the pegmatite (Hutchinson, 1982), no beryl was identified by Corey (1995) or Hughes (1995) during their investigations. However, abundant dark green tourmaline crystals do occur and may have been mistaken for beryl.

Other Minerals:
 spodumene, erythrite, columbite, feldspar, tantalite, tourmaline, molybdenite, cassiterite, lithiophilite, fillowite

Reeves Tin Pit, Lunenburg County
UTM (NAD27)
Zone 20
 Northing 4953870
 Easting 379700
Details:

 The Reeves Tin Pit is located 5.1 km west on the Dalhousie Road (Forties Road) from the village of New Ross, Lunenburg County. The prospect is found within the community of Forties and 0.5 km south of road on the Reeves farm. Reeves is a common name in the New Ross area. The prospect may be reached by going 80 metres south along a woods road that starts at a small man-made pond behind the barn on the Reeve's farm. At that point turn west from the woods road onto a foot path and walk southwest for 120 m to a cleared area. The prospect is located in this cleared area and in 1982 consisted of a water-filled pit, outcrops and overburden dumps (O'Reilly et al., 1982). Since 1982 the pit has been filled in by the land owner but dump material can be found laying about.

References:
NSMOD #A10-004
Further Info:

 Mineralization: Flecks of fluorite and blue-turquoise fluorapatite are common in the pegmatite and associated leucogranite that accompanies the pegmatite. The mineral assemblage that is reported to occur in the central zone of the pegmatite is impressive and includes: cassiterite, amblygonite, lepidolite, fluorite, topaz, tourmaline, beryl, wolframite, scheelite, columbite, durangite, metatorbenite, tapiolite and monazite. A Department of Mines and Energy field check reported in 1982 indicates that most of these minerals are not obvious and only fluorite, lepidolite and fluorapatite were noted (O'Reilly, et al., 1982).

Faribault (1908) reported that a pit was dug in 1903, uncovering cassiterite- and fluorite-bearing quartz boulders. Consequently, digging continued and a shaft was sunk into bedrock with work continuing for the next few years. A pit was sunk (7.5 m deep, 3.6 m long and 3 m wide) on a pegmatitic segregation within light grey leucogranite. The site has been visited by numerous persons since Faribault's time but the dyke was apparently not visible due to the water level in the pit and the fact that much of the outcrop had since been covered over by dump material.

Other Minerals:
  microlite, monazite, morinite, scheelite, tapiolite, topaz, tourmaline, triphylite, tungstite, wolframite, apatite, fluorapatite, beryl, cassiterite, columbite, durangite, fluorite, lepidolite, metatorbernite




 

 Cleavage: are non-right angles, four directions; one perfect, two good, 1 only distinct

 Colour: possible and observed colours

 Fracture: uneven to conchoidal

 Hardness: 5.5 - 6

 Luster: vitreous to greasy and pearly on cleavage surfaces

 Streak: white

 Possible Useage:

 More Info: Mineral Gallery, Mineralogy Database

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