The Dan 48 fluorite prospect is situated in the Caribou Range in the Northern Rocky Mountains, 8 kilometres north of Grayling River, 88 kilometres west-northwest of Nelson Forks. It was explored by Frontier Resources Incorporated and Pan Ocean Oil Limited in 1972.

The Caribou Range is underlain by folded, mainly Devonian and Mississippian sedimentary rocks belonging to Ancestral North America (Geological Survey of Canada Map 1713A). The Dan Group of claims covers an east-dipping panel comprising the Upper Silurian to Middle Devonian Stone and Dunedin Formations, and the Upper Devonian Besa River Formation. A number of fluorite-barite showings of the vein or bedded replacement type occur in the claim group, all within the Dunedin Formation in a north-trending linear belt with a strike length of 8 kilometres. The northern half of this belt has been called the "Northern" trend, and the southern half the "Southern" trend (Assessment Report 4205). The Dan 48 prospect is near the centre of the Southern trend. Other showings in this belt are covered by MINFILE occurrences 094N 004, 094N 005 and 094N 006.

The Dunedin Formation consists of bedded, dark grey, fetid, argillaceous or siliceous (silty or cherty) limestone, and is about 260 metres thick (Assessment Report 4205). The uppermost 30 metres of the formation consists of dark grey limestone with numerous lenses and nodules of black chert. Like most of the other occurrences in the belt, the Dan 48 is in a 23-metre-thick interval near the base of this upper, chert-rich subunit of the formation. In this locality, the mineralization consists of fine-grained disseminated fluorite forming a bedded replacement in pitted, sandy limestone (Assessment Report 4205). The limestone is cut by thin feeder fractures. The exposed mineralized zone is 15 metres long, 6 metres wide and 2 to 3 metres thick (Assessment Report 4205).

An assay was made of a composite sample from the Dan 48 and two other, similar bedded replacement occurrences in the belt: the Dan 32 (094N 004) and the Dan 6 (094N 005). the result was 53.4 per cent fluorite (CaF2; by weight), 41.1 per cent quartz, and 4.1 per cent witherite (BaCO3), for a total of 98.6 per cent (Assessment Report 4205).

In 1972, the Dan, Bow, Pete, Ray, Joy, Stan, Sun, and Tom groups totalling 235 claims were held Bow Valley Exploration Ltd. and optioned to Pan Ocean Oil Ltd. and Frontier Resources, Inc. In 1972, mineral exploration in the area of the Dan claims was conducted by Frontier Resources Incorporated (Assessment Report 4205). Prospecting and geological mapping were done on the Bow and Dan claims and 467 samples were collected on the Bow claims for geochemical analysis. This work identified 12 fluorite showings, most of which were reported to occur within the upper 30 metres of the Dunedin Formation. Four of these showings warranted entry into the province’s electronic MINFILE database: Dan 6 (094N 005), Dan 32 (094N 004), Dan 39 (094N 006) and Dan 48 (094N 007).

In 2010, Stikine Energy Corp conducted a prospecting and sampling program on the Dan property. The work located three fluorite showings near the Dan 6, Dan 32 and Dan 39. Mineralization at these showings is described as stratiform, disseminated to massive, bedded replacements, and as veins, stockworks and breccias. Only one sample (NS10-BL01) of 7 from 3 different property locations, was submitted for analysis which graded greater than 1 per cent fluorine and 0.24 per cent barium. Limited prospecting identified areas of weakly to well-mineralized fluorite over a 3.5 kilometres trend that appear to follow that appear to follow a crude northeasterly trend. Mineralization was particularly well-developed in the vicinity of the Dan 4 MINFILE occurrence. In that location, purple fluorite occurs in fractures, stockworks and narrow dilatational breccias that cut grey, well-bedded, fossiliferous limestone. These zones were locally marked by subtle earthy hematite staining of the limestone.